The problem with this is that in many situations, you can have a perfectly valid study done with only 8 people. It entirely depends on who those 8 people are.

The problem with this is that in many situations, you can have a perfectly valid study done with only 8 people. It entirely depends on who those 8 people are. You are by far much more at risk of falsely believing something because your heuristic for believability is wrongly associated with skepticism.