Not all learning disabilities are simply an inability to concentrate. A fair number of them seem to be linked to some miswiring in the brain. Not all of them are even purely negative -- I'm not trying to be politically correct -- studies have in fact shown that many dyslexic people are better at three-dimensional visualization.

On the other hand, the recent rise in autism has been linked to multiple vaccination.

Learning disabilities include:

• autism
• dyslexia
• dyscalcula
• dysgraphia
• aphasia
• agraphia
• ADHD (Attention Deficit Hyperactivity Disorder)/ADD (attention deficit disorder)
• mental retardation

I know there's quite a few I've missed -- just drop me a /msg.