Just before the Cambrian explosion. Generally speaking, radiation is much more likely to produce damaging mutations than helpful ones. It would be interesting to know if some Ediacaran species disappeared at this point.
His struggle to bring reality to“sci-fi” origin of life research is Intro of the Walter Bradley Center’s inspiration for our work on AI: The Bradley Center hopes to have a similar effect by promoting more general knowledge of fundamental issues around “thinking computers and questions around the real effects of technology on human well-being. A friend Read More…
What if the true state of things is something one is not supposed to discuss? That situation is very common and leads to similar conundrums.
Dickinsonia, he says, is not an animal.
Experience from recorded history is clearly of humans getting just such ideas as the authors claim to be impossible in remote antiquity — and to make their point, they use modern students! Most likely, the felt need to identify a subhuman state of mind lies behind such a claim. Unlike the claim that the Neanderthals never produced art, this one can’t just be exploded. It can never be demonstrated either but in the present environment, that doesn’t matter. If the claim is made enough times, it will become orthodoxy.
Recently, theoretical physicist Ethan Siegel crossed our screen while making clear why, in his view, a multiverse MUST exist. If we know so little about the actual universe that we can’t answer the title question, what sense does it make to insist that there must be an infinity of universes?
Some say it’s time to consider the zoo hypothesis: “They can see us but we can’t see them. The idea revisits a theory proposed in 1973 by radio astronomer John Ball: Ball went further, proposing that we may live in a metaphorical zoo — a kind of cosmic Eden. The aliens of the galaxy have Read More…