Comment by fsckboy

when it gets past the "intro" slides and into the A-B-C explanation, slide 11 says "A helix is a shape that loops around and around, like a spring." Unfortunately, what is shown is not a helix nor a normal spring, it's just yet another spherical helix progression.

also, the progress dots at the bottom should be toc nav buttons, single stepping backward to find the slide above was torture.

and the derivation of a circle from two sines and a sphere from three, to me should really be separated out as a "pre req" presentation. this thought goes along with the above "hey, where's my helix" thought