Simon recounts the results of cognitive psychology research into human expertise and relates it to organizational learning. The findings for a world-class expert include which factors?
a. The expert holds in memory somewhere around 50,000 "chunks" of relevant information
b. No one becomes a world class expert without 10 years of dedication to learning and acquiring the 50,000 or so "chunks"
c. The information is held in memory in a sort of indexed encyclopedia called a production system which can retrieve relevant chunks based on cues
d. All of the above are included