When Indy and the other guy are entering the temple, Indy makes the guy stop and wait while he sets off the spear trap. Wouldn't a trap set off by a shadow go off at night, or for that matter when the sun was no longer pointing straight down the hole? This makes for a good scene, but it just doesn't work for 1936 with ancient technology. Oh ya, who reset the trap after forestal bought it? Don't tell me the Hovitos, they weren't the people who built the traps.