Initial talk

16 files changed, 382 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b25c15b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+*~
diff --git a/backing-anatomy.png b/backing-anatomy.png
new file mode 100644
index 0000000..d3b1f0e
--- /dev/null
+++ b/backing-anatomy.png
diff --git a/backing-blue.jpg b/backing-blue.jpg
new file mode 100644
index 0000000..13ab17f
--- /dev/null
+++ b/backing-blue.jpg
diff --git a/backing-blue.png b/backing-blue.png
new file mode 100644
index 0000000..328c78f
--- /dev/null
+++ b/backing-blue.png
diff --git a/backing-herp-derp.png b/backing-herp-derp.png
new file mode 100644
index 0000000..e8a0537
--- /dev/null
+++ b/backing-herp-derp.png
diff --git a/backing-onhand.png b/backing-onhand.png
new file mode 100644
index 0000000..a6a904a
--- /dev/null
+++ b/backing-onhand.png
diff --git a/backing-sidewinder.png b/backing-sidewinder.png
new file mode 100644
index 0000000..61a474e
--- /dev/null
+++ b/backing-sidewinder.png
diff --git a/backing-tessera.png b/backing-tessera.png
new file mode 100644
index 0000000..06cf4de
--- /dev/null
+++ b/backing-tessera.png
diff --git a/backing.png b/backing.png
new file mode 100644
index 0000000..f20750c
--- /dev/null
+++ b/backing.png
diff --git a/backing.svg b/backing.svg
new file mode 100644
index 0000000..d5f7358
--- /dev/null
+++ b/backing.svg
@@ -0,0 +1,175 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:xlink="http://www.w3.org/1999/xlink"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="1280"
+   height="720"
+   id="svg2"
+   version="1.1"
+   inkscape:version="0.48.3.1 r9886"
+   sodipodi:docname="backing.svg"
+   inkscape:export-filename="/home/dsilvers/dev-git/snake-talk/backing-tessera.png"
+   inkscape:export-xdpi="90"
+   inkscape:export-ydpi="90">
+  <defs
+     id="defs4">
+    <clipPath
+       clipPathUnits="userSpaceOnUse"
+       id="clipPath2998">
+      <rect
+         style="fill:#ffffff;fill-opacity:1;stroke:#ffffff;stroke-width:3.46896172;stroke-linecap:round;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
+         id="rect3000"
+         width="1239.3561"
+         height="615.47998"
+         x="-1076.5593"
+         y="-706.89331" />
+    </clipPath>
+    <clipPath
+       clipPathUnits="userSpaceOnUse"
+       id="clipPath3004">
+      <rect
+         style="fill:#ffffff;fill-opacity:1;stroke:#ffffff;stroke-width:2.70000005;stroke-linecap:round;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
+         id="rect3006"
+         width="1092.3138"
+         height="703.70221"
+         x="-1664.7284"
+         y="490.45071" />
+    </clipPath>
+    <clipPath
+       clipPathUnits="userSpaceOnUse"
+       id="clipPath3010">
+      <rect
+         style="fill:#ffffff;fill-opacity:1;stroke:#ffffff;stroke-width:2.70000005;stroke-linecap:round;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
+         id="rect3012"
+         width="1129.0745"
+         height="1034.5472"
+         x="1974.5674"
+         y="353.9115" />
+    </clipPath>
+  </defs>
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0.0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="0.19042146"
+     inkscape:cx="691.08653"
+     inkscape:cy="355.71429"
+     inkscape:document-units="px"
+     inkscape:current-layer="layer1"
+     showgrid="false"
+     inkscape:window-width="1918"
+     inkscape:window-height="1062"
+     inkscape:window-x="0"
+     inkscape:window-y="16"
+     inkscape:window-maximized="0"
+     borderlayer="true" />
+  <metadata
+     id="metadata7">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer"
+     id="layer1"
+     transform="translate(0,-332.36218)">
+    <image
+       y="139.50504"
+       x="-349.51208"
+       id="image3829"
+       xlink:href="file:///home/dsilvers/dev-git/gitano-talk/debian.jpg"
+       height="1080"
+       width="1920" />
+    <image
+       y="-1190.002"
+       x="2799.8691"
+       id="image3107"
+       xlink:href="file:///home/dsilvers/dev-git/snake-talk/raw/4993897.png"
+       height="734.45068"
+       width="1573.8229" />
+    <image
+       y="-2562.0811"
+       x="-3257.7593"
+       id="image3055"
+       xlink:href="file:///home/dsilvers/dev-git/snake-talk/raw/kellogg-blue.png"
+       height="2448"
+       width="3264"
+       transform="matrix(0.81403604,-0.58081436,0.58081436,0.81403604,0,0)" />
+    <image
+       y="70.020042"
+       x="2469.9194"
+       id="image3169"
+       xlink:href="file:///home/dsilvers/dev-git/snake-talk/raw/IMG_20141007_194032.jpg"
+       height="1126.5433"
+       width="1522.356" />
+    <image
+       y="421.51712"
+       x="282.69614"
+       id="image3231"
+       xlink:href="file:///home/dsilvers/dev-git/snake-talk/raw/anerytessera-h.jpg"
+       height="600"
+       width="800" />
+    <rect
+       style="fill:#0000ff;fill-opacity:0.38157899;stroke:none"
+       id="rect2985"
+       width="1125.1357"
+       height="91.901413"
+       x="-2.7055938e-07"
+       y="356.53723" />
+    <text
+       xml:space="preserve"
+       style="font-size:56px;font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#ffffff;fill-opacity:1;stroke:none;font-family:DejaVu Sans;-inkscape-font-specification:DejaVu Sans Bold"
+       x="38.073441"
+       y="422.18109"
+       id="text3755"
+       sodipodi:linespacing="125%"><tspan
+         sodipodi:role="line"
+         id="tspan3757"
+         x="38.073441"
+         y="422.18109">Snakes</tspan></text>
+    <rect
+       style="fill:#0000ff;fill-opacity:0.38157899;stroke:none"
+       id="rect2985-0"
+       width="1115.9457"
+       height="91.901413"
+       x="163.45325"
+       y="942.08051" />
+    <g
+       id="g3060"
+       transform="translate(-535.65394,-1522.9376)">
+      <rect
+         transform="translate(0,332.36218)"
+         y="242.11269"
+         x="1901.0463"
+         height="414.8692"
+         width="624.92957"
+         id="rect3056"
+         style="fill:#ffffff;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1" />
+      <image
+         width="582"
+         height="357"
+         xlink:href="file:///home/dsilvers/dev-git/snake-talk/raw/snakeanatomy.gif"
+         id="image3053"
+         x="1919.8854"
+         y="606.03522" />
+    </g>
+  </g>
+</svg>
diff --git a/friday-talk.pin b/friday-talk.pin
new file mode 100644
index 0000000..8369ede
--- /dev/null
+++ b/friday-talk.pin
@@ -0,0 +1,206 @@
+# Codethink Friday Talks - Snake Anatomy - Pinpoint
+
+[backing.png]
+[center]
+[font=Sans 50px]
+[stretch]
+
+--
+
+# A brief introduction to snakes...
+# Those who study snakes are often called "Herpetologists"
+# I am, as you know a little derpy, so...
+
+-- [backing-herp-derp.png]
+
+# Welcome to my little herp-derp
+
+--
+
+Kingdom: Animalia
+Phylum: Chordata
+Class: Reptilia
+Order: Squamata
+Clade: Ophidia
+Suborder: Serpentes
+
+# Animals, with backbones, reptiles, scaled, snakey things, snakes.
+#
+# Snakes are reptiles, cold blooded, sub-order Serpentes
+
+--
+
+Basic features, and distinguishing features
+
+# Ectothermic
+# Amniote - eggs with amnios (membrane) for fluid, for land eggs
+# Vertibrate - bones on the inside
+# Covered in scales (except in cases of unusual mutation)
+# Obligate carnivores
+# Exceedingly flexible jaw
+# No eyelids, unlike legless lizards
+# No external ears
+
+--
+
+Scales
+
+# Formed from the epidermis
+# Inner surface hinges back to overlap adjacent scale
+# Fixed number at hatching
+# Increase in size as the snake grows
+# Made of keratin
+# Differentiated scales form the rattle or spectacles
+# Rattle is added to at each shed, but can break off
+# Colourless (colour is from underlying skin pigmentation)
+
+--
+
+Shedding
+
+# Shedding, or Ecdysis occurs as the snake ages.
+# Young snakes moult more often (4-6 weeks when very young)
+# Adult snakes moult as little as once a year.
+# While known to allow growth in insects, this is disputed for snakes
+# When a snake first prepares to shed, no outward indication other than
+# maybe a loss of appetite
+
+-- [backing-blue.jpg]
+
+# "In blue" is when the inner layer of the outer scales dissolves
+# Colours are diminished due to the inner layer oils
+# Just before moulting the eyes then clear and the snake will
+# spend more time near water
+
+--
+
+The shedding itself
+
+# The snake breaks the skin around its mouth and then crawls out of the
+# old skin. Like peeling a sock off
+# Check for spectacles and tail tip
+#
+# See -- a shed!
+
+--
+
+Scale arrangement
+
+# Except on the head, snake scales overlap as described earlier.
+# Scales on the head are thicker and don't overlap.  These are often
+# called shields, or plates.
+# Tummy has large scales, very slippy, good for locomotion.
+
+--
+
+Snakes are bilaterally symmetric
+
+--  [backing-anatomy.png]
+
+# Snakes do have paired organs such as lungs, kidneys, testes etc.
+# Not always are both of a pair useful, e.g. many snakes only
+# have vestigial left lung.
+# Heart in a sac to help it move when food moves down the oesophagus
+# Unusual placement of organs, see how some start and end overlapped
+
+--
+
+Locomotion
+
+# Snakes typically move with lateral undulation -- this is where the
+# snake tacks left and right in waves -- Most common and the same
+# cost of transport as lizards of similar mass -- employed by
+# both land and sea snakes.
+
+-- [backing-sidewinder.png]
+
+# Sidewinding, employed when the environment lacks the irregularities
+# needed for lateral undulation. (e.g. mud or sand).  In this only
+# half the body at a time moves, the rest remains in contact to minimise
+# slippage.  Also low caloric cost.
+
+--
+
+Concertina, Rectilinear, Flying?!
+
+# Concertina -- bunches up, braces, stretches, invert, repeat.
+# Rectilinear, direct forward motion, slowest form of motion but used
+# for stalking prey across open ground.
+
+# Some snakes launch themselves from branches, undulate in the air and
+# can achieve controlled glides of 100s of feet and can turn in the air!
+
+--
+
+Venom? Constrict? Forage?
+
+# Various infra-orders of snakes, some of which are venemous, some
+# are constrictors, some simply forage for either motionless food such as
+# eggs, or already dead lizards.
+
+-- [backing-onhand.png]
+
+Alethinophidia
+Core Alethinophidia
+Macrostomata
+Caenophidia
+Colubridae
+Pantherophis Guttatus Guttatus
+
+# My snake, Kellogg, is a Corn Snake,  Corn snakes are collubrids which is
+# a constricting infra-order of snakes.  So to get to Corn snakes, we're
+# now eleven layers down the classification tree.
+
+-- [backing-onhand.png]
+
+Genetics
+
+# Because Corn Snakes are kept as pets, there's a lot of research into their
+# genetic makeup.  Different "designs" of snake are called morphs.
+# Kellogg is a Motley Corn Snake.
+# High level traits such as anerythristic, amelanistic, striped, spotted,
+# etc.
+
+-- [backing-tessera.png]
+
+# Very striking morphs such as this anerythristic tessera have a number of
+# bred traits such as the very striking stripe along the back, the motley
+# esque side pattern, and of course, the absence of red and yellow pigmentation
+# which results in this beautiful monochromatic snake.
+
+--
+
+More Genetics
+
+# Some traits are single-allele
+# Some are multi-allele
+# Some are dominant or recessive or co-recessive
+# We talk about 'het for XXX'
+# Huge numbers, see the wikipedia page on corn snakes for a large list
+# Usual issues regarding inbreeding for the more "complex" morphs
+
+--
+
+A Song of Reproduction
+
+# Corn snakes are easily bred, but need brumating for 60-90 days.
+# Breeding is shortly after the winter cool
+# Snakes lay broods of 12-24 eggs and then go away and never return.
+# Shells are leathery and eggs usually hatch after around 10 weeks
+# Newborn corns are roughly 10 to 15 cm long
+
+--
+
+And finally...
+
+# Richard Maw may want shade his eyes, but I thought I'd show you video
+# of Kellogg eating, and explain a little about what is going on.
+
+# https://plus.google.com/u/0/photos/109098675742430569483/albums/6058586949191989809/6066797722797226434
+
+--
+
+Any Questions?
+
+
+--
diff --git a/raw/4993897.png b/raw/4993897.png
new file mode 100644
index 0000000..38a7cea
--- /dev/null
+++ b/raw/4993897.png
diff --git a/raw/IMG_20141007_194032.jpg b/raw/IMG_20141007_194032.jpg
new file mode 100644
index 0000000..bf4e2a4
--- /dev/null
+++ b/raw/IMG_20141007_194032.jpg
diff --git a/raw/anerytessera-h.jpg b/raw/anerytessera-h.jpg
new file mode 100644
index 0000000..79fd663
--- /dev/null
+++ b/raw/anerytessera-h.jpg
diff --git a/raw/kellogg-blue.png b/raw/kellogg-blue.png
new file mode 100644
index 0000000..881716a
--- /dev/null
+++ b/raw/kellogg-blue.png
diff --git a/raw/snakeanatomy.gif b/raw/snakeanatomy.gif
new file mode 100644
index 0000000..094f21f
--- /dev/null
+++ b/raw/snakeanatomy.gif