How do you know if the advice you just got from an investor on your fundraise was any good?

(Spoiler: it's probably terrible advice, and you're about to waste a lot of time following it.)

We review thousands of pitch decks at Startups.com, and as part of that process, we hear countless tales of Founders having gotten "really strong advice" from an investor they talked with about their deal. They get super hung up on changing everything to accommodate this feedback.

My question is always, "Who was the investor, and what were their qualifications to give that advice?"

Whenever I ask, the Founder says "Well... they are an INVESTOR!" as if claiming that title is tantamount to irrefutable knowledge. Look, I invest in the stock market, but that d...