Some people regard it as "fact" that the Moon landings were faked. Some people regard it as "fact" that they've been abducted by aliens. Some people regard it as "fact" that they can power their car with water. Some people regard it as "fact" that there is only one size of infinity. Some people regard it as "fact" that you can choose one element from each of infinitely many non-empty sets. Some people regard it as "fact" that 0.99999... is less than one.

One of my colleagues at work recently told me that point nine recurring is less than one. I'm interested to hear what people here say.