Is Dota really anything but a bunch of mental processes stacked on top of each other?
Like I said before, stats are a core mechanic. I think no other item in the game illustrates that better than Treads, and of course, Tread switching. You can just tell new players something like this:
Strength is HP and HP Regen
Int is mana and mana regen
Agi is attack speed and armor
That goes in one ear and out the other. If they learn Tread switching, they actually see the tangible benefit these stats have. I remember when I first started playing, one of the questions I had was "Okay, now I have these boots, and I can change which stat they boost? What's the point of that?"
If you are teaching people that can't remember literally 3 lines of stuff that every person that has ever played games would mostly recognize as sensible, then we have other issues, you may need to explain to them what edge panning is.
If that's the case tread swapping is gonna be very very far into the future.
Also the whole "it's a core mechanic" is not actually an argument for much.
Damage and armor types are too.
No, I don't mean Pure, Magical etc, I mean piercing, hero, siege. You know, the stuff that Valve hid but didn't actually remove because it would affect balance.
I would never even dream of talking about that shit, though, they would look at me like a lunatic.
Now I don't consider them on the same level, I'm just saying that it's not a good justification for anything.
I would talk about stats even in a bit of detail, but I sure as hell don't think that Treads are required for such explanation.
Actually, they'd probably just make it more complicated.
Tread switching isn't some highly complicated concept, it's relatively simple. It benefits new players by giving them what they need at the right moment, whether HP, mana, or just damage in general. Giving new players tips and little tricks like that are not overtly complicated, and something they can certainly handle. New players aren't complete and total idiots. This has a tangible benefit and something they can learn by doing.
It has been already explained that nobody thinks tread swapping is an hard mechanical thing (I definitely said as much already, maybe more than once) and much less conceptually, but really, no single action in dota is complex but new people still forget to click their shit (and sometimes not even new players).
People get flustered in the middle of the action and don't do very basic stuff like recalling what is the button for the stun, what they should do, they just don't click Q and then click an enemy and when the situation is like that, YES, 1 more button before doing said basic action is an actual hurdle that is definitely gonna make them fuck up more.
This has nothing to do with being idiots because it's not a matter of understanding it, it's a matter of getting used to walking before you get to skipping.
Once the coordination to do basic actions is down, then you can get them used to adding a couple more keys into the mix.
It's kind of like playing DJMax or other games of that ilk, you don't just start with all the shit showering down your screen at 5x speed, you ease into it.