Are humans limited to the senses we’re born with? Or is it possible to hack the brain and create new senses? Even if we could, would we want more senses than we already have? This week we’re thinking about hacking the brain: perception beyond the five senses.

How exactly does consciousness occur? Neuroscientist Anil Seth argues that it is a controlled hallucination. Having less to do with intelligence than we often think, consciousness depends on how the brain predicts its world to operate.