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Wirth said that program is a combination of data structures and algorithms in 1976, there were no _really_ new ways of constructing programs ever since.

HtDP teaches exactly that: proper construction of abstractions, small functions that operate over these abstractions and how to combine everything into a useful software.

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So software engineering techniques such as React and Redux were already known back in 1976?

(Just an example)

Redux for sure. Smalltalk had message based system like Redux has (with the difference that in smalltalk this system was object oriented). But functional programming also existed in 1976.

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