Binoculars. Truth be told, they aren’t something I have ever really spent much time contemplating. As a photographer I spend a great deal of time peering through bits of glass with one eye, rather than enjoying it with both!
This isn’t to say I’m not familiar with binoculars of course. I grew up on a small island in the Seychelles called Bird Island, which was famous, as you might imagine, for its hordes of nesting seabirds, not to mention being home to many passing migrant species. My parents and many of their friends were avid bird watchers, and I have certainly spent some time with my eyes up against binoculars having the virtues of various birdlife explained to me.