Letters Archive

The Skinner box was a controlled environment for running experiments, and B.F. Skinner discovered that the timing and frequency of rewards could dramatically affect behavior

This letter introduces B.F. Skinner, an influential psychologist who expanded on Pavlov's ideas about classical conditioning and operant conditioning through his experiments with pigeons and rats in a 'Skinner box.'

Discover how Russian scientist Ivan Pavlov accidentally discovered classical conditioning and its impact on our behaviors and reactions!

The world-famous violinist told the young man that he lacked the fire, which changed his life and inspired him to keep pushing through initial difficulties in everything he did.

In the 19th century, theater managers hired claques to cheer for shows and guide the audience's reaction, but some claques began blackmailing performers, leading to their eventual decline.

This letter highlights how each day of the week is connected to a specific heavenly body, with Monday being associated with the Moon, Tuesday with Mars, and so on, as observed by ancient Babylonians who created the seven-day week.

Discover the fascinating history behind our Gregorian calendar, from its Roman roots to the naming of months and even leap years!

This letter explains the origins and connections between the days of the week, as observed by ancient Babylonians who divided their lunar month into seven parts based on seven celestial bodies in the sky.