Sheldon: What exactly is it you do? I know you chatter on about it all the time, but I've never really paid attention.
Leonard: Okay, well, right now I'm designing an experiment to study the soft component of cosmic radiation at sea-level, but I really don't need any help.
Sheldon: Oh, sure you do. Now, see, what's this here in the schematic, is that a laser array?
Sheldon: Now, hmmm. What happens if you use argon lasers instead of helium neon?
Leonard: It would blow up.
Sheldon: Are you sure?
Leonard: Pretty sure.
Sheldon: Pretty sure's not very scientific. Is this how you normally work, just hunches and guesses and stuff?