Moving averages are useful for that. If you use a small enough window, anything can look fantastic or horrible. But if you pick a longer window, you’ll get a better general picture.
A bubble can go on for months or years but when it pops, then you see a truer picture.
GDP is standard for comparing country vs country. As you can see, the USA has been on a slow tumble for a long time. Trump (who?) will be long gone and barely a blip will show in the GDP.
Just how it is.
This book, from 2011, takes this notion to extremes and shows the rise and fall of modern civilizations.
USA and Europe simply won’t see much growth. We’ll manage fine, so long as all are taken care of and we don’t turn into a two-class society, which we’re edging towards and perhaps always were but had a brief 4-5 decade golden zone.
But this isn’t where the future is. Still not an awful place to live so long as you fit certain requirements but that’s how the US always has been, sadly.