That's my point. Run away - to go hide somewhere or to an adult. And that ignores the larger point that you aren't telling five year olds to run for the nearest stone spear to combat zombies, let alone leave them lying around to play with when things are quiet.
Anyway, I think there are arguments of realism there that can be made for people sealing stuff in wooden crates to keep them secure from small kids or looters or just long term storage in such a situation. But overall I don't think that this is a great argument to maintain the status quo anyway. Finding 2 stone spears, a stone sledgehammer and 3 stone arrows in a Shotgun Messiah crate on day 10 is really boring. So many things already don't make sense in this world anyway if you look closely enough even if we ignore that it's a zombie apocalypse. The town planning of these cities makes zero sense. Why was there a water treatment facility for like 50k people built in a town with maybe 500 residents? Why did everyone drive the same ugly car? So we should just ignore realism and readjust the loot tables with a little stone in the very beginning
Suspension of disbelief applies to this game, we can kinda ignore things like the cars or the water treatment facility as most of us dont actually want the decs to create multiple car skins or are city builders to realize that it shouldnt be there, im kind of sure we would even ignore the stone tools in loot if they were in open crates marked "survivor cache".
Problems start to arise when something clashes too much within the gameplay that the player just point at it and says "wth is this?". Stone tools in their current form are like that.
I think the whole progression should work like this:
Stone age tools are practically tutorial items, these are the @%$*#! you are getting for the start of the game and you are supposed to ditch them as fast as possible, so heres my dream progression system:
- Really early game: Stone and Brass age
So the player starts out and gets itself some stones, wood and fibers and makes a stone axe to start crafting. They continue this as long as they learn to make a Forge or have enough materials for a Primitive Forge ( its a bunch of stone and clay cobbled together and can only make brass ).
Once they have somekind of forge they can collect brass to enter the next age (what historically also makes sense). They get their tools all replaced by brass tools, durability is still low but they got much faster and more efficient tools to work with
- Middle game: Iron and Steel Age
The player is running around with brass hammers and spears collecting whatever they need to advance into iron age. They make a forge and start smelting iron and steel, this is the longest period of the game with loads of different equipment.
- End game: Specialized equipment
At this stage the player most likely figured out what and how they like to play, at this stage i would like to see somekind of "engineers table" or "advanced forge" where you can make specialized items for your style.
If you are stealthy you could make a ghillie suit what decreases zombie detection range and makes no noise or if you liked to use bows you could craft advanced recurve or compound bows with much higher range and damage than their normal counterparts.
Essentially this is the stage where you specialize in what you like and you also need the upgrades from here because the game is getting more and more dangerous.
The whole point is that there is a craftable (with minor exceptions) only option, something whats lootable and craftable and finally something whats only lootable (with minor exceptions). Each stage uses up the game in a proper form, the first makes you believe that these are really only craftable and dont appear in loot, the second are both modern age and common so you can both make and find them, the last ones are specialized equipment what you can mostly only find in the shape of the whole item or blueprints.
Why would the good stuff still be there? Look at the world in game, significant time has passed...prolly years. Wouldn't those places be the first places looted? Realistically those should be the LAST places with great loot. Those guns would be looted faster than toilet paper

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-Hurry the @%$*#! up Joe, we got the guns what the hell you are doing back there?!
- Sorry Fred gotta seal back these crates with their original boxes.