I understand that some here have already started a project in a given
language, and aren't going to change at this late date; this is
addressed to those for whom it's still an open question.

The choice of language is said to not matter very much, and there are
projects for which this is true. AGI is not among them, so I wrote up
my thoughts on the matter in case they be of use to anyone. There
turns out to be a website collecting perspectives like mine, so I
posted it there:
http://wiki.alu.org/Russell_Wallace%27s_Road_to_Lisp

And copy below:

I'm doing research in AI on the problem of procedural knowledge, which
means dealing with (creating, debugging, reasoning about) program
code. This entails dealing with code in parse tree form (other ways to
specify computation turn out to be object code, so one way or another
you end up coming back to the parse tree whatever the desired end
product). This necessarily entails using Lisp if we define it in the
broadest sense as the high-level language family that exposes the
parse tree; the decision to make, then, is whether to use an existing
dialect or invent one's own.

So naturally, as hackers are wont to do, I chose the second option.

And I was happy as a lark for a while, putting a lot of work into
creating my own language, until in late summer 2008, compelled by
repetitive strain injury to take a break, I thought a bit more about
what I was doing.

Okay, I thought to myself, instead of using an existing language that
has a dozen mature, efficient implementations, thousands of users and
extensive documentation, you're spending time you haven't got to spare
on creating one that will have a single inefficient prototype
implementation, one user and no documentation. And for what? A nicer
syntax and ditching some historical baggage that isn't really doing
any harm in the first place?

Sharpen your wits, Russell. This is going to be a hard enough job even
if you're smart about it. Making mistakes like this, you haven't a
prayer.

After that, the decision to use Common Lisp over Scheme was dictated
by the fact that Common Lisp has the more comprehensive language
standard, which makes it easy to port code (at least code that
primarily performs computation rather than I/O) between
implementations. The ability to defer the choice of implementation is
a significant strategic advantage.


-------------------------------------------
agi
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