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I love that they wrote an in-universe explanation for the TV quality prosthetics.
Like when Worf had to address why Klingons looked different in TNG compared to TOS.
*DS9 not TNG. I have a special place for that episode…partly because of Jadzia in the TOS uniform.
Oh right! For some reason I thought they addressed it earlier.
And yeah, you’ve gotta appreciate Jadzia in most any uniform.
And out of uniform, like when she was on Risa in “Let He Who is Without Sin …”
Don’t lie, it’s almost entirely because of jadzia in the TOS uniform
I get it, you’re alone and bored in the universe and you have to come up with things to do to entertain yourself. I normally don’t kinkshame but flying around and masterbating into every ocean you come across hoping life takes hold is kinda fudged up.
It actually makes perfect sense that a species who does that would be related to humans in particular.
I always wondered, did all the other planets have dinosaur periods too?
It’s probably implied somewhere that the KT asteroid was part of their life seeding program that started by eliminating predominant species. They would most likely look for the right conditions on a random planet to support life and then inject the biosphere with their creation.
Lol no prime directive for the dinosaurs.
Theyre kicking around the Delta quadrant anyways, though.
I’m not sure exactly what you mean, but i would imagine any place with life will have mass extinction events and that will make it likely that there has been at least one period before the current sapient species where there was a different group of animals in prominence.
Not quite Star Trek, but Rick & Morty did an episode with that as a plot point recently in the season where they only travel the galaxy, not the multiverse. Every planet had some form of prehistoric life, with the interpretations of what they found having more or less the same effect on society, but with different silly names.
Was just fun to see the idea explored. Trek would have probably taken it a bit more seriously though.
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More of an explanation than a reason, but an excellent one nonetheless
The problem is that it isn’t how evolution works at all. I think this episode and the devolution one were probably the worst, science-wise. I mean, I know they play fast and loose with everything from basic physics to computer science, but for a biologist it’s kind of the equivalent of those stories that speculate that atoms are themselves tiny solar systems with the electrons as planets that have tiny civilizations on them.
They probably came up with the idea because computers using a pseudo-random number generator can produce the same series of “random” numbers if they start from the same seed. We know that evolution is a random process. Therefore, we should imagine that we could control evolution, even over the span of billions of years, if we control the seed. 
First, we have to define our terms. When I say “evolution,” I am referring to the phenomenon that describes the change in the genetic makeup of a population over time. When we talk about evolution more colloquially, we are usually referring to (to borrow a phrase) the origin of species by means of natural selection. In other words, it is the process that explains the diversity (and homogeneity) of life from genes through ecosystems to the biosphere. It takes place simultaneously at multiple levels and the number of non-pseudo random number generators (if we want to consider them that way) is incalculable.
One of the central principles of modern theoretical biology is that you can’t rewind the evolutionary tape. The further back you rewind it, the less like our present the outcome is likely to be. Wind it back far enough - say, to the very beginning at t=0, and not only do you not get humanoids, you’re not likely to get technological intelligence. I’d be surprised to see four-limbed animals or even vertebrates. The randomness comes in not just from things like the random genetic recombination that resulted in the randomly selected gametes that resulted in the individual in a process that traces itself back through the beginning of evolutionary time. It also affects which of the resulting organisms will survive, based in part on every other living thing that’s also undergoing those same processes.
The less random part is the fitness of an organism is the contribution of its generic material to the next generation. Picture two leopards, one faster than the other due to fortunate genetics. One has a 50% chance of propagating genes to the next generation, the other 25%. If the fastest leopard is a lucky mutant, there’s still a very good chance those genes will disappear. Over time, and given some lucky rolls of the dice, we’d expect the faster gene to spread, but it can be wiped out by an unfortunate event, like breaking a leg while hunting or an unfortunate fire or flood or a mutation that gives it cancer.
Sometimes we wind up at the same place from multiple routes. Eyes evolved independently somewhere around a couple dozen times. We can use that to say that sensing light is a pretty good idea. I would not be surprised if life on other planets evolved light sensing. I would expect the underlying mathematics of evolution to be the same, modulo whatever they use for reproduction.
The field of exobiology studies how we can abstract from our single example of a biosphere and our knowledge of evolutionary dynamics and apply it to try to conceive what non-terrestrial life is like. They ask questions like “What else could take the place of DNA?” and even more importantly “What is life?”
Sorry for the rant.
The evolutionary predestination thing used to justify following the Prime Directive before it was a thing in ENT is also pretty awful.
