It seems obvious to point this out but Doug's mere presence - and the exhaust-pipe-fumes of humanity that follow him - has (not unexpectedly) debased the entire debate.
The heckling (and presence of David Price!) is terrible, on all sides. The format is getting unhinged by Doug's lies and the need to respond to them, along with his insane straw men, like his "How many standing committees?" imaginary killshot. He keeps using his same lines....John is a smooth talker, he's disingenuous etc. etc. And people cheer for him.
Tory keeps going on about his mythological SmartTrack and Olivia keeps going on about how his 90-degree turn is going to cost people their houses and....really, Doug is like a noxious gas introduced into the room that has poisoned the entire process. You could see it coming a mile away but watching it is just...remarkable.