The universe, planets, galaxies, or anything beyond the sky requires me to imagine that they exist, as it's not possible to confirm they're real without using a mechanical thing. Same can be said about molecules and cells, as I cannot see them with my naked eye.
Being true to myself, is accepting that imaginary ideas are false if I cant confirm them as true in my natural physical experience, without using a machine. Anyone who disagrees with this is obviously lost, another robot in the matrix.