"Do you know why they put rebar in concrete? So, imagine a single piece of rebar. If you try to put a lot of weight on the small end, compressing it lengthwise, then it'll bend easily. However, if you try to pull it apart, you're going to have to put a lot of tension on it before any gains you make don't revert the second you stop pulling on it. Conversely, concrete is kind of just sand that's stuck together. You can put a lot of weight on it and it won't budge, but if you try to pull it apart, it'll easily crumble. When you combine the two, you get the strengths of both.
"I'm sure you can see the relevance to your situation. If you were in just the resin, at that thickness, it would crack and break if you tried to bend against it. Similarly, as you were demonstrating earlier, you can flex against just the webs and squirm like a little worm. But by first wrapping you in webs and then dipping you in resin, we've created a composite material which doesn't let you move at all! Isn't material science fun?"
