[bicubic]

Your thoughts actually do have mass, just like the data encoded on an SSD or hard drive has mass. If thoughts are the activity state of the brain, then the mass of the thoughts would be derived from the potential energy of the electrical impulses driving those thoughts. Your memories also have mass through a slightly different mechanism.

You could also construct a physical storage medium that doesn't change mass to encode data, e.g. an array of objects which are rotated to encode state.

This spiritualistic view that thoughts have no mass == consciousness is not material is demonstrably wrong at both sides of the equation. Thoughts certainly have mass, and consciousness is certainly material as is evidenced by observing anyone with severe traumatic brain injury or degenerative brain disease.

https://physics.stackexchange.com/questions/31326/is-a-hard-...