Down the rabbit hole of types

Time for a progress report, now that I have some progress to report. I didn’t get much research done last semester because I was teaching a new class: 6.170 Software Studio. It was a noble experiment with mixed results, but that is another story. Back in March I presented the latest version of Subtext at the IFIP Working Group 2.16 on Programming Language Design. I realized then that Subtext should be statically typed. Ever since I have been falling down the rabbit hole of types.
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Turing on programming

The process of constructing instruction tables should be very fascinating. There need be no real danger of it ever becoming a drudge, for any processes that are quite mechanical may be turned over to the machine itself.

– Turing, A. M., 1946, Proposed electronic calculator, report for National Physical Laboratory, Teddington

So was Turing wrong, or are we just doing it wrong?