> go "wow, I find this good and I think it will keep being around and good for a while".
Sure, you can have a much richer model of the world than the Lindy model provides.
>fact that it is young doesn't mean it is doomed, or even that it is not good. The Lindy effect says nothing in that direction.
No; it says that young things are less likely to last than old things. If the average expectancy is small, sure it doesn't guarantee any one thing is doomed (some aren't) but it absolutely does tell you that most of them aren't going to last long.
Imagine a friend tells you that they know someone who is planning to become a professional rock star when they leave school.
They are probably not going to make it, because most people who try don't. You can't be sure, because some people do become rockstars. But it's not an error to be sceptical of their chances.
If you hear they are still gigging after 3 years, even if they haven't made it yet, you are probably a tiny bit less sceptical.
That all makes sense, right?