Why does there have to be a plecebo/control group in a drug test?

Question

Why does there have to be a plecebo/control group in a drug test?

In: Biology

Answer 1

For extreme simplicity, let’s call it drug x and drug y

Drug x seems to drop your happy ass like a log into a coma. But we can’t quite verify if it was the drug or some kind of external process happening. So we introduce a plecebo and see if the effects are real or faked.

I’m sure it’s a lot more complicated than this though.