I personally have a tough time filtering out inputs, and find my attention forcibly split between paying attention to nearly everything whether I want to or not. This makes me act and plan more linearly than is optimal, and is horrible for crowded rooms, but otherwise doesn't disable me. Also, I have a strong dislike of the action of chewing gum. I was recently joking about not being able to walk and chew gum at the same time, and I wonder if it might actually have some truth to it? I would like to know everyone's (but especially people with similar filtering issues) habits regarding gum.
How often do you chew gum?
(The poll is in the first comment.)
Just this morning I attempted to play some DDR while eating a scone. As a result, my already-poor typical performance was reduced to abject failure. I wouldn't have predicted quite that level of degradation. Admittedly, the scone was extremely crumbly and otherwise distracting.
Edit to add: I have no trouble with walking and chewing gum at the same time.