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Before the Dragon Book some commercial compilers used heroic techniques that got superior performance along various axes.
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>In the middle 1970's, the IBM corporation did (and perhaps still does) most of their in-house programming in a computer language called FORTRAN.

Sorry, I doubt that. In the middle 70s it was COBOL, when COBOL'74 came out it became king of in-house programming for IBM and many other companies.

Now if you said the 60s or science based programming, I would agree with you about FORTRAN. But in-house usually means running the business, that is where COBOL rules.

Now, in-house is SAP ABAP, I think that took over at IBM in the mid to late 90s and early 00s. But IBM is moving to the next release of SAP and from what I heard from people there, ABAP is being phased out for something new that SAP came up with.

In the mid-1970s Alan k. Was working at Xerox Parc creating Smalltalk and the future.

Sadly, it didn't sell paper.

> Computer programming is still a black art. It's less than fifty years old, and nobody is very good at it yet. We can make better tools than we know how to use.