Through the camera video,the ratio of time speed in the cave to that outside is 60, but based on the speed of day-night shifting,the ratio is roughly 3600 plus 6 plus 365 . To conclude,it's miscalculated.And I regard that as an off-putting flaw. Besides, why doesn't future explorer use a taser? It's just absurd to use that low efficient anti-riot weapon. And why didn't he have a translator? But it still has numerous merits and mentioning Trump is one of them. 😂And I'm intrigued by the possible sequel.