A “veridical paradox” is a situation that produces a solution that seems absurd, but is correct nonetheless. The video below shows one such paradox, a mathematical problem named after game show host Monty Hall. On the show Let’s Make a Deal, at the climax of the show, a contestant was given a choice of three boxes/curtains/doors. Behind one was a fabulous prize, behind the other two, a “zonk” or something of little value. After the contestant chose a box, Hall would then reveal what was in one of the other unchosen boxes, showing one of the zonks. He would then ask the contestant whether they wanted to switch their choice to the other remaining box.
According to the math, the contestant should always make the switch. The video below explains why, even though it sounds counterintuitive, this increases your odds (and makes the choice more obvious by switching to a scenario with 100 boxes).