Traps and darts make no sense

Ryan George already made a fantastic, hilarious video about these ancient people that were to design traps to protect their treasures, it should make people think.

This movie's traps are no exception - they don't make any sense.

First, how old are they? How can they still work after all this time? Time usually has a big effect on everything, unless someone does continuous maintenance. Wood doesn't last forever, it rots and eventually either pertifies or turns to dust or something. Metal rusts and so on, you'd have to have a maintenance crew to keep the traps functional.

Second, where do they get their power? I don't see or hear any kind of ancient power plant or generator running, creating electricity for the traps, so they must be some kind of 'spring-loaded' things that can be 'sprung' once, and then someone has to reset them.

Third, there seem to be many victims of those traps already, and since the power source for these traps has to be something mechanical, how can the same trap kill more than one intruder, or work again after being sprung once?

Fourth, how did the ancient people test these traps? I mean, you can't very easily just test a trap that destroys the whole temple and rolls down a very round rock (where did they find it, why is it so round? Or.. how did they manufacture something that round?), but not before their precious item is already stolen.. So if the trap architecture or structure or design had had any kind of small mistake or error in the plans or execution, the temple wouldn't have crumbled down.. which means that only after the temple is utterly destroyed, can you truly know your trap worked.

What? How can you test it like that? Does this movie mean to tell us these people REBUILT the temple each time until it worked perfectly? This doesn't seem feasible just to protect some tiny statuette.

There's more, much more, but I'll move on to the other point;

We know that movies make really stupid mistakes to 'be dramatic'. For example, people yelling 'fire' when we're watching some 'bows and arrows' type movie, archers HOLDING the arrow for a really long time (*coughMulancouch*), before FINALLY releasing the arrow. This works fine with GUNS, but not bows and arrows, unless it's a crossbow, of course!

This movie has an interesting jungle tribe that the 'french guy' can easly control for some reason, making really stupid sounds while making a throat-cutting gesture, as if that's the tribe's language for 'kill him'. RRrrriight.

What makes this tribe interesting, is that there are so many weapons - some have spears, telegraphed, ready to be THROWN (sigh, a spear could be used in a really effective way against a swordsman in melee range, throwing is NOT the only option, for crying out loud), looking at Indy MENACINGLY (because of course).

But the POINT I want to make here, is that the poison of those darts they also use (talk about 'overkill', when they have archers, spearmen AND poison dart..err.. shooters? That can't hit a big airplane from 2 meters away, by the way... Must be the Stormtroopers school of aiming)..

..are completely useless. How many darts did that other guy have in his back? Let's say 20. So one dart does 1/20 of the effect that's necessary to kill. Heck, Indy's morning coffee is probably more poisonous than one of those darts!

Why would they make/have such ineffective poison? Aren't those jungle tribes usually pretty darn knowledgeable about the MOST effective poisons the jungle has to offer, and doesn't every big jungle in the world usually offer pretty darn effective poisons? So what gives?

WHY DO THEY NEED TO SHOOT 20 DARTS to kill ONE man? Also, why are the darts so evenly spread? This means they must be either very lucky to be able to shoot them that way, they also must have LITERS and liters of that poison to be able to WASTE it that way, or they must be REALLY good at aiming to be able to shoot them so evenly right next to each other all over the back instead of, you know, one effective area, like the neck..

I mean, the more you think about these details, the more you realize nothing makes any sense in movies. Why do people make movies this way, can't they just have ONE dart in his neck? WHY would that not be enough, if the poison is effective at all, if the tribe's blowdart-marksmen are any good at aiming, and so on and so forth?

Also, when you think about it, to go back to the first topic - would you really protect your treasure with TRAPS? Why would the traps be so convoluted anyway? Why not just a simple trapdoor or why not just hide the darn thing so well no one can ever find it or just pass it through generations as heirloom or... I mean, what's the point of the traps? SO MUCH WORK and yet you leave the statue to be brightly light in the middle of the room, with NO DUST on it after.. what, decades?

Also also, WHERE did this ancient temple tribe get LIGHT-SENSITIVE sensors? How can the trap sense that Indy's hand blocks the light? REALLY?