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No one really "said" it; it is the equation that represents Einstein's Theory of Relativity.
The three basic measures of memory retention are recall,
recognition, and relearning. The measure of memory used by Hermann
Ebbinghaus to assess the impact of rehearsal on retention was the relearning. <span>Hermann
Ebbinghaus is widely known within the world of psychology. This important
psychologist and philosopher was one of the first to employ scientific
methodology in the study and analysis of a higher cognitive capacity. Ebbinghaus
made several contributions to the world of psychology, being especially
relevant for being a pioneer in the study of memory.</span>
Fasting, because it is hard for the muslims to go through the pain, to see what it is like for the homeless. It basically teaches them that they should be thankful for the things they have, and be able to get what they need in life.
Griots were a combination of advisors, historians, and entertainers charged with preserving rich oral traditions for future generations.