"Lessson I learned is not to try plotss that would make girl-child friend think I am evil or boy-child friend think I am sstupid," Harry snapped back. He'd been planning a more temporizing response than that, but somehow the words had just slipped out.

Harry named two people in particular - Hermione and Draco - who made him less susceptible to Quirrelmort's influence. This plot nearly removed both of them from Harry.