>>6677793Because we monitor brain activity on organisms that are capable pf self recognition and they display much higher cognitive functions than organisms that do not.
Also keep in mind your making comparisons to organisms that technically don't even have central nervous systems to conduct these higher cognitive processes such as trees. Also can you imagine the horrible hell a organism would face being an immobile plant or tree and being able to contemplate your existence but powerless to move or operate? That kind of thought process would be completely counter productive to that organisms lifestyle