[xoa]

>What's the tangible evidence that the world is a positive-sum game?

LEDs. To take one very specific, simple example, though feel free to substitute in everything from computers to engines. Fundamentally, we have both increased our average energy budget per person and we can accomplish far more of what we want to do for far less energy. Taking the basic general goal of "I wish to have visible photons available to me at a sufficient level for my eyes to work well at arbitrary times and places", compare the total costs and % of resources converted to the goal vs wasted as heat/losses/externalities of say torches to oil/gas lamps to electric arc to early incandescent to later incandescent to halogen to fluorescent to LEDs. We can now do with single watts for tens of thousands of hours and pennies of silicon/impurities what would once have taken dozens to hundreds of watts to kilowatts and lasting just hundreds of hours, tens of hours, or even mere minutes.

Increasing abundance and efficiency for human goals is the definition of increasing overall wealth. Even given imbalance in ultimate distribution, the pie has absolutely grown larger. Massively humongously wildly larger. Positive spirals thankfully abound, such as better nutrition and knowledge of infectious disease at young ages yielding better outcomes and life expectancies for the rest of their lives. None of this is to downplay the importance of keeping inequality from going too far, but to even suggest it's a zero-sum game, that world economics are actually the same right now as they were a hundred or a thousand years ago, is frankly ludicrous.

Edit:

>E.g., a product costs $X, owners get too large of a % of that compared to employees.

That makes absolutely no sense as a standard or line of reasoning. The total sum has nothing inherently to do with how its divided, are you sure you're clear on definitions here? When something is zero-sum that means that for anyone to gain a larger percentage, someone else must necessarily lose a smaller percentage. But when the total sum itself is increasing then somebody could be gaining more and everyone else could also be gaining more, just not as much more as if it were equally split.

Also, what is "too large of a %" and how do you know? And if the product costs $X, but previously other competing products cost 7*$X, and as a result the company is many times the size it would be otherwise, and in turn the % the employees get is still an absolute amount far larger then it would have been anywhere else, now what? Rather then thinking about fuzzy "proper %" it seems better to investigate power imbalances, human limit edge cases, information asymmetry, cost externalization, etc., that affect the equilibrium of the system. Of which there are many!

[StavrosK]

The fact that we can bake another pie doesn't make pie-eating positive-sum. The more you eat, the less is available for others, and you can't keep baking pies for ever.

[xoa]

>The fact that we can bake another pie doesn't make pie-eating positive-sum.

The fact that we can "bake another pie" for 1/100 the resources is the definition of positive-sum. There is now more to go around. Even if previously the pie was perfectly divided but now of 100 pies 20% goes to whomever came up with the better way and another 50% goes to whomever financed the better way, the remaining 30% to the masses is still 30x the pie. I'm really not sure what you're confused by here, unless you're getting really lost in analogies.

Again: a basic definition of increasing wealth is increasing core abundance and efficiency. There can be more useful energy/resources to accomplish goals with, and there can be more efficient ways to achieve goals. Either or both combined mean there is genuinely more to go around. How best to distribute energy/resources remains very important, but does not change that having more and/or having it go farther means more wealth overall.

[jordan_curve]

I think you're focusing too much on the metaphor. The example the person above gave using LEDs is very good.

For the sake of simplicity, I'm just going to stick to the United States. As the previous commenter explained, the introduction of LEDs (along with cheap methods of manufacturing them) lead to much cheaper and more effective lighting. Undoubtedly there were companies and individuals that stood to profit quite a bit from these inventions. I don't know whether it helped create any billionaires, but certainly there are similar examples which have. On the other hand, although it created more wealth for those individuals, it created wealth for the entire country. Now every American has more money to spend because they don't have to spend as much money replacing their light bulbs.

In this case, the fact that some people gained much more wealth from this series of inventions is not a bad thing because everyone also benefited. In fact, the reason that inventions like this even come into existence is precisely because there is high reward for the individuals or companies doing so.

There are absolutely certain markets where things are much messier, but overall it's certainly not zero-sum. The issue is that many Americans do not have high enough wages or benefits to meet their family's needs. We should be working towards addressing poverty, not towards some moral tirade against billionaires.

Edit: I honestly can't express these concepts nearly as eloquently as xoa has in their comments, so I'd suggest referring to those.

[wizzwizz4]

LEDs are the discovery that we didn't actually need as much firewood to bake those pies.

You can't bake pies forever, no. But the stars are vast and many. That's yet another semantic stop sign: a phrase you say when you don't want to think about things any more, just like "it's not zero-sum".