Well, no. Sure, the social/cultural/subjective route is the only practical way, at present, to find out whether someone prefers country music to classical. Doing it via brain scans is more an abstract theoretical concept.
I could liken it to finding out "are you currently behind in any loan payments?" by starting with a complete copy of all of the raw paper and computer data of all the world's banks, and sifting through them. In principle you could do it, but it would be a task so monumentally difficult as to be practically impossible. That's what it would be like using a "brain scanner" to determine someone's music preferences. But instead, we can use established tools and channels, the way credit rating agencies do, to query the information in a structured way. That's like asking the person about their music preferences.
But, that doesn't begin to suggest that there's anything non-material about a person's financial status. If all the paper and digital records of a debt were all destroyed, the debt would no longer exist. It would not live on as any sort of nonmaterial debt-spirit. It doesn't make the debt, or a person's musical tastes, some mysterious ineffable non-material entity, any more than the plaid on a fabric is beyond comprehension even though no single thread contains it.
http://www.internationalskeptics.com/forums/showpost.php?p=10390201&postcount=706.
Since all materiel or spiritual phenomena are bounded, composed and changeable, they can't be considered as the actual substance of themselves, because the actual substance is unbounded, non-composed and invariant.
In these media the substance can be discussed only in terms of analogy, as given, for example in
http://www.internationalskeptics.com/forums/showpost.php?p=10377509&postcount=566 and
http://www.sciencechatforum.com/viewtopic.php?f=51&t=27823&p=269245#p269301.
Any scientific research that is done only at the level of the bounded, composed and changeable, can't include the actual substance of reality, and therefore fails to transom force=violence into force=harmony among the bounded, composed and changeable phenomena.
More details are given in
http://www.internationalskeptics.com/forums/showpost.php?p=10336151&postcount=170 and
http://www.internationalskeptics.com/forums/showpost.php?p=10336522&postcount=173.
Dear Myriad, today we already have force=violence in terms of Hydrogen bombs, mass destruction chemical and biological weapons, that are the direct results of bounded, composed and changeable (mentally unstable) processes in scientists' and politicians' brains.
The next weapon of these bounded, composed and changeable (mentally unstable) processes in scientists and politicians brains, is going to be anti-matter bombs, where 100% of matter and anti-matter are transformed into energy within less than a micro-second, and the result is "bye bye planet Earth".
As long as I am alive I air my view of this activity that is leaded by bounded, composed and changeable (mentally unstable) processes in scientists' (and now also terrorists and criminals without any particular country) and politicians' brains into self-made destruction of our home planet.
The prevention of mass destruction can be done if the actual substance of reality, which is unbounded, non-composed and invariant, becomes the actual awareness (
Unity consciousness) of scientists and politicians, and naturally enables to transform force=violence into force=harmony among the bounded, composed and changeable phenomena, simply because the actual unbounded, non-composed and invariant substance naturally does not destroy its own creative expressions, like any healthy organism.