For those that don’t know. It’s a formula that was proposed by a dude named Drake that estimates the odds of intelligent life out there in the universe.
It does not mean that these ET’s are visiting earth and anal probing our neighbors or creating cool patterns in corn fields. It just estimates the odds of intelligent life starting elsewhere in the universe.
There are a couple of unknowns with the equation and a few criticisms but with 160 billion planets in our galaxy alone it’s very hard to imagine that we are the only “intelligent” life to evolve.
I personally feel that there is life out there now but even if it does not exist now. I think in the 13 billion years that the universe has existed, intelligent life has come and gone many times.
Now why would intelligent life vanish? Does technology, for all the good it brings, eventually lead to our demise? Do we all hit some evolutionary bottleneck that we can’t recover from?