the assumption that "one can pick up everything in the environment" needs to be debated here.
We know there are 5 senses. but these senses cannot cross sense. meaning, the tongue cannot hear, the eyes cannot taste and so on.
like wise, the Creator, bestows upon His creatures (those who genuinely strive to look for Him) senses that make them aware of Him. thanks to current technology, Examples of those abound around us.
A cellphone from late 1990s might still work but will not be capable of streaming youtube or netflix. Even though it lays immersed and bathed in the waves carrying that information. The waves and wavelengths that we have no way of sensing.
We as humans, have created cities, gardens, monuments, so on. (Almost) Always with the object of geometric regularity (straight lines, definite shapes). You step out in "nature" and you don't see any of that, in the visible world at least.
No two leaves are alike, no two trees, the rocks and mountains-irregular shapes, animals, etc
can the feeling of standing at the beach watching and hearing those ocean waves be compared to looking at the New York skyline?
can gazing at the stars endless and countless from your patio on a breezy night be compared to say, looking outside of an airport lobby?
can looking at the grand canyon be compared to the burj khalifa?
the signatures are there.
BUT...deep down when you move into the Molecular subatomic level...you start seeing definite shapes....may be not...but thats another discussion
OR ... go into mega macroscopic celestial level and you see the giant planets and stars