Massive respect to Lex, who showed deep compassion towards all humanity.<br>And to the guest, for his scientific rigor and courage.,(reply>), he's trying so hard not to get cancelled,(reply>), He didn’t challenge his guest quite enough. What about neuroplasticity? Richard claimed that the US army has a threshold for entry, below which people cannot learn effectively. Does this mean that the ability to learn, to improve one’s reasoning skills, can be achieved by some subset of individuals? And does this mean that the evidence showing the ineffectiveness of brain training should be revisited?