You have been downvoted but you do make a good point although it's a cliche obviously (you could've used things like; people said planes and even trains were not possible which would push that cliche). However some things are actually outside the realm of what is possible at the moment and in the foreseeable future and if science agrees on that with solid proof and foundation it is just silly to try imho.
I am curious if investors think you like when they invest in the impossible or they just are not really interested in fact and just want portfolio or another reason?
I was close to the Jan Sloot[0] who invented impossible compression. And got invested into by prominent investors who believed him. And some of them not ignorant of the math behind it either and yet they invested. My company got asked by a 'friend' of Sloot who also lived in Nieuwegein (my company was there too) to recreate the algorithm based on discussions this guy had with Sloot and notes he wrote down during those discussions. I presented, to my colleagues and this guy, a proof based on (Kolmogorov) complexity that we cannot do that and that his writings were gibberish; some of my friends and colleagues told me I was insane in not pursuing something revolutionary like this and, as you said; a lot of great technology was perceived as 'impossible' and yet we have that as well. No-one became a billionaire on this tech yet as was promised so I'm going to say it was a good call.
I am curious if investors think you like when they invest in the impossible or they just are not really interested in fact and just want portfolio or another reason?
I was close to the Jan Sloot[0] who invented impossible compression. And got invested into by prominent investors who believed him. And some of them not ignorant of the math behind it either and yet they invested. My company got asked by a 'friend' of Sloot who also lived in Nieuwegein (my company was there too) to recreate the algorithm based on discussions this guy had with Sloot and notes he wrote down during those discussions. I presented, to my colleagues and this guy, a proof based on (Kolmogorov) complexity that we cannot do that and that his writings were gibberish; some of my friends and colleagues told me I was insane in not pursuing something revolutionary like this and, as you said; a lot of great technology was perceived as 'impossible' and yet we have that as well. No-one became a billionaire on this tech yet as was promised so I'm going to say it was a good call.
[0] https://en.wikipedia.org/wiki/Jan_Sloot