User:RD/9k/truth values & necessity (Q618)

Main entry

truth values and necessity
/ relationship between truth values within logic and what is real, accurate, material, empirically attested, undeniable, or obvious / reality and "True" values (sense) / reality and "False" values (sense) -> a topic that spun way out of control between the pages for truth values, court cases, and now "god-given rights", and now has its own page.

There is a difference between unicorns being real and unicorns not being real; a material world containing unicorns would be different from a material world not containing unicorns -> relatively uncontroversial. you can pile up any number of fantasy books next to a pile of non-fiction books to logically prove this.
How can you prove you will never collect evidence of a unicorn? / If unicorns are not real and you will never collect evidence related to unicorns, how can you prove you will never collect evidence of a unicorn?