Here is a foolproof way to make hard boiled eggs.
Put eggs in a pot.
Fill the pot with cold water so that there's at least an inch of water over the eggs. (Don't use a ruler, put your pointer finger on the top of one of the eggs, if the water comes up to middle of your two nuckles, then you're fine).
Put a lid on the pot. Preferably the lid that actually fits the pot. However, when you're looking for lid that actually fits the pot, make sure that your Mom's pie plate (that you kept forgetting to give back to her) doesn't fall out of the cabinet and smash to the ground.
Turn on high and let it come to a rolling boil where it steams and hisses out of the pot. On my oven, this takes about 7-8 minutes. (Sorry, didn't get a picture of this).
Take the pot off of the burner, and keep covered. For 4-6 eggs, let it sit for 14 minutes. For 7-9 eggs, let it sit for 16 minutes. For 10 eggs or over, let it sit for 18 minutes.
When the timer dings, get a bowl of ice water. Take the eggs out of the pot with a slotted spoon and put them in the ice water. This will reduce the green rim around the yolk. You can put this bowl in the 'fridge.
When you are ready to peel them, lightly crack the bottom of the egg (the rounder part), and peel!
Give it to your "cold" egg loving child for a healthy snack.