Who says that leaves are green

[Cassiopeia88]

Hello Cassiopeia - there’s a subtle difference here.
The poem works if you move from a specific, factual truth to an abstract, spiritual generalisation. That’s why parables are so powerful.
So the literal meaning of the poem, examined from a scientific standpoint, has to make sense.
But perhaps no such feat was attempted here, in which case if all you’re saying is ‘things are perceived differently by different people’ then it’s not a very interesting statement to make, and is furthermore, not supported by your exposition.
Hope that clarifies

I see, I understand your point. That's obviously not the only thing I had in my mind while writing this, like I explained above. Even so, I believe we often tend to forget that things indeed ARE perceived differently by different people or that they are not as one-sided as we make them to be sometimes. So, at least for ME that's not uninteresting.
As far as I'm concerned, the main function of this poem is to make you question things that you take for granted. Like I already said, I did ALSO have scientific stuff in my mind, but mostly existential, in the sense of what is the true essence of things or whatever, are they stable, do they change, are they perceived differently be different people, etc. If it made you think about literal, scientific things, that's fine by me and you can interpret the poem in this way. For me it's not all about sense, but also the effect that sth has on you or that it makes you think at all. If you don't find this interesting or thought-provoking without the exact scientific explanation behind, that's ok and I understand your point.

Cheers