As I was taught a long time ago:"to assume is to put an ass before u & me".

@FrayedBear That joke first appeared in a Bennie Hill sketch in 1973 appeared

@LenHazell53 thanks for that Len, I've never previously seen that skit. In 1973 I was not into Benny Hill.

In observed phenomena, after evidence is tested and confirmed then yes one person expressing that established fact is right and everyone else is wrong.

However in actions it is perfectly possible for there to be more than one effective solution that will achieve the desired result, however depending on the criteria, there can be right and wrong ways to do things.

For example there maybe a most efficient way to do something, a fastest way to do something and a most economic way of doing something that are all different, yet all can under different circumstance be consider the contextually correct way to do something with all other methods being considered incorrect, while all are still technically the right way.

@LenHazell53 Understood. My comments are usually intended as generalizations, rather than (exhaustive) specific notations indicative of each or all instances.