Given that (with regard to greenhouse gasses) we've a) unlocked positive feedback emission loops from tropical & arctic methane and b) still pumping increasing amounts of carbon into the air, it's clear to anyone paying attention that we've already fallen off the cliff.
We're just hovering for a second like Wile E Coyote.
Is a) actually clear at this time? My impression is that there are some questions about methane levels, but I don't know if sources of them are clear given that humans activity also causes a lot of methane emissions. But yes, apparently we also just had the largest ever recorded jump in CO2 levels at 4.7ppm year-over-year and the sea surface temperature data over the last year is sobering.
We're just hovering for a second like Wile E Coyote.