ofessor White.

White had a huge blackboard installed on the cellar wall opposite the
machine, and he proceeded to fill the board with block outlines filled
with crabbed writing and odd-looking symbols. The whole was meaningless
to James Holden; it looked like the organization chart of a large
corporation but it contained no names or titles. The arrival of each new
visitor caused changes in the block diagram.

These arrivals went at their project with stop watches and slide rules.
They calibrated themselves and James with the cold-blooded attitude of
racetrack touts clocking their favorite horses. Where James had simply
taken what he wanted or what he could at any single sitting, then let
it settle in his mind before taking another dose of unpremeditated
magnitude, these fellows ascertained the best effectiveness of each
application to each of them. They tried taking long terms under the
machine and then they measured the time it took for the installed
information to sink in and settle into usable shape. Then they tried
shorter and shorter sittings and measured the correspondingly shorter
settling times. They found out that no two men were alike, nor were any
two subjects. They discovered that a man with an extensive education
already could take a larger sitting and have the new information
available for mental use in a shorter settling time than a man whose
education had been sketchy or incomplete.

They brought in men who had either little or no mathematics and gave them
courses in advanced subjects. Afterwards they provided the foundation
mathematics and they calibrated and measured the time it took for the
higher subject to be understood as it aligned its information to the
whole. Men came with crude English and bluntly read the dictionary and
the proper rules of grammar and they were checked to see if their early
bad-speech habits were corrected, and to what degree the Holden machine
could be made to help repair the damage of a lifelong ingrained set of
errors. They sent some of these boys through comparison dictionaries in
foreign tongues and then had their language checked by specialists who
were truly polylingual. There were some who spoke fluent English but no
other tongue; these progressed into German with a German-to-English
comparison dictionary, and then into French via a German-to-French
comparison and were finally checked out in French by French-speaking
examiners.

And Professor White's block diagram