Arthur C Clarke paraphrased:-

When an old professor tells you something is possible, then it is possible.

When an old professor tells you something is impossible, then it will probably become possible.

Do not follow your early logic saying there is not possibilities. In our current realm of knowledge and expertise but, then again, does this realm of knowledge and expertise set precedents for other possible streams of knowledge and expertise?

Not a US citizen, left to think further in how the pyramid of knowledge is being best served when we witness popularist politicians banging up against scientist and intelligence analysts? As a Brit, we witnessed short term expenditure cuts on disaster warnings and preparedness and now continue to spend millions, billions (no matter the currency) unpacking why politicians, technocrats and some scientist messed up big time responding, responding being the operative word, as SARS-CoV-2 opened into Covid-19.

Think on, never say never and always make sure to tie the shoe laces well when running / jogging in these climate changing days