The flat earth topic crops up every so often and I have occasionally responded to some of them, much amused at how stupid Stupid is.
Those of you who have not lost interest can view the following by Prof Dave who has put stupid in his unscientific and unthinking place, but being stupid they do not see it that way!
https://www.youtube.com/watch?v=JDy95_eNPzM
https://www.youtube.com/watch?v=KyD8VIK032o