Consider another example. Upon my arrival to Harvard University thirty years ago, I started my research on the first galaxies in the Universe with redshifts larger than 10. At that time, most of my colleagues said that this research was a waste of time because “we all know that galaxies do not exist beyond a redshift of 2.” Hence my question once again:
In 1990, would Elon be justified in arguing that he did not notice signs of galaxies born in the first half of cosmic history, and hence they do not exist?
The discovery of galaxies with redshifts above 10 in 2022 required the Webb Telescope to probe deep into space with unprecedented infrared sensitivity at a cost of ten billion dollars.