>>13426955>We are far more likely to find endless worlds full of dinosaur like creaturesUsing Earth as an example, life has been around for up to 4 billion years, and we've got a billion to go before the sun heats up enough to evaporate all surface water on Earth.
If we count 4 billion years ago as "zero":
3,460 years fall into Pre-Cambrian times: 69.2%
289 years for the Paleozoic: 5.8%
186 years for the Mesozoic: 3.7% (Dinosaur Times)
66 years bring us up to the present: 1.3%
Of that, homo sapiens have been here 300,000 years, and we were all hunter-gatherers until about 12,000 years ago.
There's another 20% we haven't seen yet.
No telling how long humans will last, and a single planet is an awfully small sample size, but if we're typical we get dinosaurs on less than 4% of the planets, human-like folk on 0.00006% plus a percentage based on however much time we've got left, up to 20% if we last another billion years (seems unlikely).
