Walking on quicksand is possible because it’s a non-newtonian fluid.Basically, there are lots and lots of sand particles suspended in water but as there are so many, when you step on it the water is forced out and it becomes a solid. If you waited in one spot then you would sink in.
next time you write a book
Just have a character comically run across quicksand like Christ walking on water and watch know-it-alls try to call you out.
The show them this shit.
The man in this gif resembles Eggman