People with Autism, Asperger's and PDD-NOS understand things that are concrete and literal - As a matter of fact, they may excel in skills and careers that require attention to details and following precise directions.
Those on the spectrum understand what they can:
For example: "concrete" has more than one meaning. In this discussion, "concrete" means:
Ideas that are able to be seen or touched because they exist in reality not just in the mind.
But "concrete" is also noun which means:
a mixture of sand, aggregate and water in specific proportions that hardens to a strong stony consistency over varying lengths of time.
This "mixture" may be what comes to mind for a person on the spectrum instead of
ideas that can be seen or touched
simply because that is how the neurodiverse brain is wired. to operate.
Many people with autism have had to learn abstract concepts, (ideas that can't be seen or touched because they don't exist in reality) such as emotions in the same way that they learned to tie their shoes- by breaking it down one step at a time.