"… you don't realize whether or not you completely understand a topic until you are tasked to explain it to someone el…"

"I think science is best taught as a puzzle to be solved."

"You need systems. You need checklists. You need … things in place to keep people from making mistakes. Left to their …"

"Even though I think they're probably usually wrong, minority opinions in science are very useful. It keeps the whole …"

"What defines a cult is not what they believe, at all. It's how they behave. The belief system is almost incidental."

"I think the Internet is the biggest classroom we have."

"There's a host of scams that are evolving all the time."

"The thing about herbs is that there is nothing supernatural or implausible about the fact that any particular herb ca…"

"I will never be convinced by any anecdotal report, ever, especially if something extremely unlikely or unusual. Memor…"

"The inability to explain something doesn't mean that it is inexplicable. … Always consider the simplest things first.…"