> You substitute marginal examples and handwaves at the future when asked for clear present evidence.
Such is unfortunately the nature of all predictive discussion. I don't think i'm being any more speculative than anyone discussing say, autonomous cars, or similarly 'somewhere on the horizon' technologies.
> It doesn't yet, and reasonable people think it never will. E.g.: https://reddragdiva.tumblr.com/post/175418385308/why-the-lig....
There's a decent bit going on in that link, but point by point:
> 1. it doesn’t work. the software is absolute dogshit. buggy as hell.
This is just saying the current iteration is buggy. That's no counter-argument to the concept.
> 1.5. it can’t work. the mesh network problem
The difficulty of this problem depends on the number of relevant nodes, and the way you structure the network itself. He even cites a good example - BGP. He claims that BGP works because the nodes trust each other, but regardless of them trusting each other, they solve the mesh network problem. That trust is not integral to the solving of the mesh network problem.
> 2. the whole idea is dumb. nobody wants a network of prepaid channels.
Now this sounds like a decent argument. Except that, one could argue that your bank account and credit card are simply prepaid channels. If the LN gets up to scale, and if it achieves sufficient node liquidity that you can pay essentially anyone...then I don't see how this prepaid channel differs in any way from a traditional bank account.
> 3. the LN solves a problem that doesn’t exist. the idea is to make transactions fast again
The LN may or may not cause merchants to adopt Bitcoin for payments. But it definitely solves the more narrow "Bitcoin doesn't scale" problem.
> 4. the LN is coin-agnostic - so it isn’t an excuse for bitcoin’s unscalability
This doesn't even logically follow. It's just a complete non-sequitur. The LN is an excuse for Bitcoins not scaling yet. The LN can also be used to scale other coins. It may be that people prefer those other coins once they've achieved scale.
> Do you have clear evidence otherwise? Not anecdote, not what it possibly does, but actual evidence?
It's extremely hard to get data for something like that. But the clearest cut case is darknet markets. Cryptocurrencies are definitely actually used there for real commerce.