Losing our Reason?

Robert Burton, a neurologist, neuroscientist and popular science author weighing in on the problem 'Philosophy' has with letting go of the concept of Reason: 

Going forward, the greatest challenge for philosophy will be to remain relevant while conceding that, like the rest of the animal kingdom, we are decision-making organisms rather than rational agents, and that our most logical conclusions about moral and ethical values can’t be scientifically verified nor guaranteed to pass the test of time. [source]

Professional philosophers will always fear variants of nihilism, claiming that if “Reason” were abandoned chaos would ensue and moral reasoning would fail. Rationality is about careful selection processes in decision-making. Semantic reliant certainty is dead.