It's made from Kevlar.

So all of those colored lines correspond to bunches of axons, the fibers that join cell bodies to synapses.

Now I'm going to mark on the toughness values for nylon fiber, bombyx or domesticated silkworm silk wool, Kevlar, and carbon fibers.

It is made for a diet which is soft, mushy, which is reduced in fibers, which is very easily chewable and digestible.

But if this McLaren were to run into a wall at 65 miles an hour, the entire crash energy would be absorbed by a couple of woven carbon fiber composite cones, weighing a total of 15 pounds, hidden in the front end.

Specifically, if you look on the vertical axis, that's stress. If you look at the maximum stress value for each of these fibers, you can see that there's a lot of variation, and in fact dragline, or major ampullate silk, is the strongest of these fibers.

Instead of one point in the brain, we can devise devices that span the brain, that can deliver light into three dimensional patterns arrays of optical fibers, each coupled to its own independent miniature light source.