Hoping this will be more fun / less confrontational, but certainly ID and non-ID perspectives will differ. In a nutshell ‘The Great Filter’ is an event that stops life inevitably filling the universe. Others have written much better accounts, so here is your background reading:
The Drake Equation
The Fermi Paradox
What do the folks here think? Is there a great filter(s) are we past it / them? My vote is there is at least one ahead of us and we probably won’t make it. Candidates include:
Environmental catastrophe, war using highly potent (N/B/C) weapons, religious zealotry taking us backwards..
I also think other possibilities are flawed assumptions in the Fermi Paradox (maybe marginal / diminishing utility in expansion beyond a certain point, or perhaps transcendence out of this physical realm for sufficiently advanced species. Certainly a million SciFi tropes (Let’s see if we can make a list? Childhood’s End, Mass Effect…) have come from this. What do you folks think?