I think it’s actually abrupt. I’ve never been able to say that in my entire career before. I’ve always gone back and forth about whether the original life was gradual or abrupt. I think it’s very abrupt.
For now, I am not convinced that issuing press releases about your compounds that talk about their discovery through AI techniques is sufficient to expect greater things from them.
But there’s a very interesting deep split in life between bacteria and what are called archaea, which look just the same as bacteria. And they’re not quite as diverse, but nearly, and they are very different in their biochemistry. And so any explanation for the origin of life has to account, as well, for why they’re so different and yet so similar. And that makes me think that life probably did arise only once.
It’s possible it started multiple occasions. There’s two provisos to that. One of them is oxygen makes it impossible really for life to start. So, as soon as we’ve got oxygen in the atmosphere, then life isn’t going to keep starting over.
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