Could Schloss Neuschwanstein have been a carrot?

Could my filthy old pair of tennies have been a photon?

Could the Brooklyn Bridge have been the Holland Tunnel?

Could Abraham Lincoln have finished his second term?

Could Teddy Roosevelt have been killed big game hunting in the Rockies, never to become president?

Could Teddy Roosevelt have been a filthy old pair of tennies?

Could the bald man in the corner have been neither bald, nor a man, nor in the corner?

Are there some F, G, such that if x is F then x is necessarily F and if x is G then x is not necessarily G?

Is it the case that if x = y then there is some F such that x is the same F as y?

Must what is yellow be extended?

Must what is visible be extended?

Questions about identity and essence.