Imagine you’re an insect cruising through the air. Suddenly, you realize you’re heading straight for a spider web. You’re doomed. But wait — you can still escape by slipping through one of the gaps. Spider webs are, after all, more gaps than web. You aim between the sticky threads — it’s going to be a close call, but you’re going to make it.
Then, as you pass through, the threads snap towards you … and you’re a spider’s dinner.