In Ocado's grocery warehouses, thousands of mechanical boxes move on the Hive. Are they all individual robots? Or is this one giant hive mind? • Thanks to Ocado: www.ocadogroup.com/technology/technology-pioneers (this video is not sponsored, and they had no editorial control). Reference: Strandwitz P. (2018). Neurotransmitter modulation by the gut microbiota. Brain research, 1693(Pt B), 128–133. doi.org/10.1016/j.brainres.2018.03.015 -- I should probably have put a "might" in there, but that's a thorough review of research and I think the claim just about holds up! Edited by Michelle Martin (@mrsmmartin) Filmed safely: www.tomscott.com/safe/ Thanks to Grant Hurst from Casual Historian for suggesting the title: www.youtube.com/user/grantghurst I'm at tomscott.com on Twitter at twitter.com/tomscott on Facebook at facebook.com/tomscott and on Instagram as tomscottgo