The end of that article is very philosophical. It raises the Cartesian question of reality and free will: Then it hits me. I may have dodged T. gondii, but gi

The end of that article is very philosophical. It raises the Cartesian question of reality and free will: Then it hits me. I may have dodged T. gondii, but given our knack for fooling ourselves—plus all those parasites out there that may also be playing tricks on our minds—can anyone really know who’s running the show?