dude on the internet: hey, so are spin class bikes different from normal stationary bikes?
internet: *answers dude*
dude on the internet: CONCLUSION: SPIN CLASS IS DUMB AND FOR SUCKERS!
me: have you ever actually taken a spin class? because otherwise your opinion is irrelevant.
dude on the internet: no, but i was an instructor for one! SO THERE!

…so you were an instructor for spin class, but a) you had to ask about the bikes used in spin classes, and b) when making a post about why spin classes are so awful, you don’t mention that you’ve taught spin classes?