I have been making a lot of hard-boiled eggs lately. I used to poke a little hole in one end, just because that's what my mom does, but I became frustrated with the fact that some of the eggs always leak out a thin stream of white. It yucks up the water and diminishes the egg inside its shell. So I started boiling them unpoked, and they seem to do fine.
So why /do/ we poke holes in eggs before boiling them? Do I run the risk of exploding eggs with my method? (Hasn't happened yet!) Or are they turning out more watery without the little escape hatch, or something? I'm curious.