No hummmm's about it.Hummmm, sure
Take the topic of this thread as an example.
A person can think the Earth is whatever shape they want, but I guarendamntee ya that if we strapped 'em to Elon's rocket and shot them into space, they would in fact see a spherical Earth.
That is of course if they wouldn't be too chickenshit to open their eyes and see for themselves.
In fact, any person on Earth that has even an average IQ could reasonably determine the shape and size of the Planet without ever leaving the surface.
....and without taking nasa's word for it either.
For some to say that there is no way of knowing for sure and that all they are doing is innocently and open mindedly embarking upon a quest for knowledge while simultaneously ignoring anything that that does not confirm their already held beliefs, are at best being dishonest and at worst actively attempting to lead others astray by polluting their minds with pure garbage.
By not addressing clear evidence that shows them to be wrong, makes them no better than the idiots who threw Galileo into prison for having merely described reality to them.