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Cc: ETHO forum.
Re. "rock solid"/reliable software:
Ada had that declared aim. Is it still alive?
Wirth advocated simplicity; if the whole-picture is small enoungh,
you can *see* the faults. But few tasks can be kept small enoungh.
Eiffel introduced checking mechanisms beyond strict typing, but nobody
seemed interested.
There's been talk/research about formal methods: where you could "prove
the results, via algebraic manipulation of the code". Or better still have the
computer auto-prove the code.
Searching the literature in this direction I came across repeated claims
that certain functional languages could formally prove correctness via
algebraic manipulation of the code. Several examples of manipulating
the code of the language: joy; were published, but I never saw a complete
task being proved.
It seems like the Artificial Intelligence wave of the 70's: they eventually
settled for expert-systems, which works more like a horse-and-rider.
I.e. the user and system collaborate. Which is where ETHO has been for
decades.
What did we call those low-flying-missiles, which automatically found
their targets, and have now been replaced by horse-and-rider drones?
== Chris Glur.
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<p>Cc: ETHO forum.<br>
<br>
Re. "rock solid"/reliable software:<br>
Ada had that declared aim. Is it still alive?<br>
Wirth advocated simplicity; if the whole-picture is small enoungh,<br>
you can *see* the faults. But few tasks can be kept small enoungh.<br>
Eiffel introduced checking mechanisms beyond strict typing, but nobody<br>
seemed interested.<br>
<br>
There's been talk/research about formal methods: where you could "prove<br>
the results, via algebraic manipulation of the code". Or better still have the<br>
computer auto-prove the code.<br>
<br>
Searching the literature in this direction I came across repeated claims<br>
that certain functional languages could formally prove correctness via<br>
algebraic manipulation of the code. Several examples of manipulating<br>
the code of the language: joy; were published, but I never saw a complete<br>
task being proved.<br>
<br>
It seems like the Artificial Intelligence wave of the 70's: they eventually<br>
settled for expert-systems, which works more like a horse-and-rider.<br>
I.e. the user and system collaborate. Which is where ETHO has been for<br>
decades.<br>
<br>
What did we call those low-flying-missiles, which automatically found<br>
their targets, and have now been replaced by horse-and-rider drones?<br>
<br>
== Chris Glur.<br>
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