Really, am I supposed to explain the lab protocol to people who didn't read it ahead of time?

And what does, "I can't find my sample" mean? Why do you think I have some insight into this issue?

Does it really matter if she used your reagents?

Why do kids cut the incubation periods? Do you think these are random times?

I teach college. I get the feeling that you and I just had the same kind of day.