Lol good vid, real face palm, when you realise you have doggedly only been considering euclidean geometry
So when I ask you about PHEW ive been asking the wrong question, i should forget PI and ask you what your metric is.
Nice
PHEW isn't my invention, it's Danangs. We'll have to ask him next time he comes on to spam his PHEW crap 
FFS this is becoming a habit, and it always seems to be you, apologies again chap

But you are on your last warning, if I mistakenly assume/accuse you of a position again you have to accept it

But point still stands, good vid which demonstrates how you can easily slip into mistaking something as a constant, which it is but only in one frame of reference.