So for him the mind is like.
Sherlock holmes mind attic.
A fool takes in all the lumber of every sort that he comes across so that the knowledge which might be useful to him gets crowded out or at best is jumbled up with a lot of other things so that he has a difficulty in laying his hands upon it.
So for holmes the entire thought process is akin to a scientist who is doing a research experiment so someone who is doing who is following the scientific method.
In his first appearance in literature sherlock speaks about the human mind and tells that ιτ is like a workshop s attic filled with lamber.
Now the skillful workman is very careful indeed as to what he takes into his brain attic.
A mind palace certainly sounds grander befitting holmes and his outsized ego as watson notes in season 2 of sherlock.
But whatever it looks like it is a space in your head.
Maybe it has a chimney.
This scientific method of mind makes use of the brain as an attic in the sense that the space in the brain is a finite resource.
The brain attic holmes s own metaphor for how we store information and organize knowledge provides the premise to begin to think like sherlock by optimizing your mental resources.