“This text is organized in the "spiral" for learning. A topic… is returned to again and again”
Methods of Mathematics Applied to Calculus, Probability, and Statistics (1985)
Context: This text is organized in the "spiral" for learning. A topic... is returned to again and again, each time higher up in the spiral. The first time around you may not be completely sure of what is going on, but on the repeated returns to the topic it should gradually become clear. This is necessary when the ideas are not simple but require a depth of understanding...
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Richard Hamming 90
American mathematician and information theorist 1915–1998Related quotes
“Love must be learned and learned again; There is no end.”
“When you learn to read you will be born again… and you will never be quite so alone again.”

“It is indifferent to me where I am to begin, for there shall I return again.”
Frag. B 5, quoted by Proclus, Commentary on the Parmenides, 708

Letter to George Washington (August 1778)

[In the Company of the Holy Mother, 305]

“I have returned. By the grace of Almighty God, our forces stand again on Philippine soil.”
On landing in Leyte, Philippines https://www.youtube.com/watch?v=Wv1PF0tAE1s (20 October 1944)

Source: Celebrating Silence: Excerpts from Five Years of Weekly Knowledge 1995-2000