"What are the things that you must replace immediately after buying a used car?"
"More than 10 percent of healthy people hallucinate."

"How Well Has Cosmic Inflation Been Verified?"

Astrophysicist Ethan Siegel thinks is have been verified pretty darn well.

Inflation has literally met every threshold that science demands, with clever new tests becoming possible with improved observations and instrumentation. Whenever the data has been capable of being collected, inflation's predictions have been verified. Although it's perhaps more palatable and fashionable to be a contrarian, inflation is the leading theory for the best reason of all: it works.