So some people have add or adhd and that is a problem.

In all reality my contention is that drug companies push this disease idea, although it does exist in some people. I am one of the. <--- just screwing with my mom here.

Attention is not a single attribute, but a collection of attributes with many layers.

focus
encode (most people run into a wall at about 7 items - this is the reason for the length of your phone #)
sustain
supervisory attention control
and switching between inputs

Also these differenet elements have different skill levels within different individuals by different senses. A person with high visual focus may not have a high audio fucus.

you can use feedback machines that monitor your theta level or other brain waves to help you focus or change mental states.

One other cool thing is that humans are better at visually tracking back data than remembering visual items in chronological order. (we want to know where danger is coming from)