If Homo Sapiens don’t always suffer consistent illusions that leaves open the possibility they sometimes perceive reality more or less correctly.
Also, if there were no possibility of some “veridical perception” there would be no way to gather evidence that some perception is illusory. That’s a good place to look. Demonstrations of consistent illusion must include some new mode of perception that reason dictates is closer to reality.
That’s irrelevant to the question of whether perceptions like spacetime are illusory, which was the actual point of the conversation.
If Homo Sapiens don’t always suffer consistent illusions that leaves open the possibility they sometimes perceive reality more or less correctly.
Also, if there were no possibility of some “veridical perception” there would be no way to gather evidence that some perception is illusory. That’s a good place to look. Demonstrations of consistent illusion must include some new mode of perception that reason dictates is closer to reality.