The hardest things so far will probably be one of the unsolved problems in computer science that you can see here: https://en.wikipedia.org/wiki/List_of_unsolv

The hardest things so far will probably be one of the unsolved problems in computer science that you can see here: https://en.wikipedia.org/wiki/List_of_unsolved_problems_in_computer_science https://en.wikipedia.org/wiki/List_of_unsolved_problems_in_c...