With Spencer ... it appears to largely be what is between the ears. Processing speed and handling adversity.
On the flip side ... the guy can lead the team and he knows how to get us into good plays. The question is whether the O can execute them (and if he'll make the throws ... even in spite facing pressure).
As for the earlier poster commenting about how his personal QB trainer isn't even making excuses ... it's his job to help Spencer improve. You don't help someone improve by simply placating them. You have to put the yoke of responsibility on Spencer ... and try to build him up so that he'll respond.
Im always alarmed at how poorly many of these guys even frame their arguments?!