Within a cortical column, the previously learned coffee cup is defined by a reference frame. The previously learned logo is also defined by a reference frame. To learn the coffee cup with the logo, the column creates a new reference frame, in which it stores two things: a link to the reference frame of the previously learned cup and a link to the reference frame of the previously learned logo. The brain can do this rapidly, with just a few additional synapses. This is a bit like using hyperlinks in a text document.
