Great brain discoveries: when white spots disappear?

Knowledge progress about a particular object (e.g., brain) has characteristics of exponential growth in a limited volume. As soon as you know that a visible part of the whole volume is filled (1/2, 1/10, 1/1000 or 1/10 000—does not matter), the time for the whole volume to be filled has almost come. The time scale is in units of a total duration of the process of the filling in the limited volume, if you have started from zero level. We did not know how much we were ignorant about the brain even decade ago. The whole brain was just Terra Incognito. But recent progress in experimental and computational neuroscience shows that presently we know about 1/10 (and not less than 1/100 000) of all brain network mechanisms. That is why we can say that we are dealing with white spots on the map of knowledge about the brain and not with the Terra Incognito any more. The time for full understanding of the brain varies from 7 to 91 years estimated by different methods. A couple of well understood mechanisms of brain functioning (work of synchronous/asynchronous neuron ensembles in cortex, cerebellar data prediction machinery, etc.) exemplify recent progress in this field.