Yes of course you can if you're sensitive and observant. That's why I limited my observation to those 'entirely swaddled' within the built & busy human world. I

Yes of course you can if you're sensitive and observant. That's why I limited my observation to those 'entirely swaddled' within the built & busy human world. I don't know what it's like where you live, but here in Australia, there are millions who never notice anything that doesn't happen on their pocket screens.