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How Louis Braille’s musical notation system remains relevant 200 years after its invention
In the 1820s, Louis Braille devised a raised-dot system of letters, numbers and musical notation. 200 years later, it’s still ...
Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...
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