In recent years we have seen a rise of Functional Programming(FP) in the industry, where one of the main claims of FP is to help us deal with the state of a program, by introducing notions like immutability, so we can reason about a program’s correctness. This problem didn’t escape the insightful mind of Ada Lovelace. In her own words:
How multifarious and how mutually complicated are the considerations which the working of such an engine involve. There are frequently several distinct sets of effects going on simultaneously; all in a manner independent of each other, and yet to a greater or less degree exercising a mutual influence. To adjust each to every other, and indeed even to perceive and trace them out with perfect correctness and success, entails difficulties whose nature partakes to a certain extent of those involved in every question where conditions are very numerous and inter-complicated. [emphasis mine]
Isn’t it amazing that problems that still affects us today were foreshadowed by Ada Lovelace over a century ago?
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