Don't buy and forget

Warren Buffett is one of most misquoted [in terms of context] investment gurus of our times.

What happens when we are given below advise ?

“Only buy something that you’d be perfectly happy to hold if the market shut down for 10 years.”

or

“If you aren’t willing to own a stock for ten years, don’t even think about owning it for ten minutes”

We buy businesse…