@oofadoofa no need to apologise! 
We all find things out that we didn't know - that many others seem to!!!
EG, I thought tigers were from AFRICA til about 5 years ago, and also thought that Holland was a country til 3 years ago. And I have been to Holland 3 times. First time in the 1980s.)
(Tigers are from Asia, and Holland is a province of the Netherlands!)
There are quite a few more examples I could give!
I bet I am way older than you too! 
Gaslighting definition BTW. (From 'Psychology Today.)
Gaslighting is a tactic in which a person makes their victim question their reality. (Usually to gain more power and control.) It works much better than you may think. Anyone is susceptible to gaslighting, and it is a common technique of abusers, dictators, narcissists, and cult leaders.