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0 pointstmerr9y ago0 comments

>Nobody uses it, but it's the best choice, both can't be true

Sure it can. It is possible for both to be true, as long as developers don't pick languages rationally, which they probably don't.

There are a few biases at play. One is that people are only exposed to a subset of the languages that exist, which are those that are either used in industry, or are making the rounds in news. Another bias is that we like to pick languages based on familiarity. For example most of my college courses used imperative languages: Python, C++, and Java. From that experience I am quicker at thinking in terms of for loops than folds and maps. So when I try a language like Haskell or LISPs I think "That's neat!" but when faced with a deadline I switch back to something closer to my first languages.

It could be that I am the only one that thinks like this, and everyone else sits down and spends equal time on every language in existence, but I doubt it.

In any case at one point LISPs were popular, so why did they lose all of their momentum?

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jodrellblank9y ago· 4 in thread

I also doubt it. But LISP dates back to 1958.

JavaScript is from 1995.

"I chose the language which exists" doesn't apply to the people in 1994 who could have had /thirty-five years/ of LISP experience (potentially) and yet still chose to write another language, in another language. And when Brendan Eich was in college around 1981, the tutors there could have had /twenty years/ of LISP experience, but weren't there to convince him that it was amazing.

Same with literally any language dating post-LISP, and I note that that covers most languages which are popular today.

"Programmers don't pick rationally" is fine on the small scale, but accross the entire industry, even among people who do love exploring programming languages, even among young entrepreneurial risk takers, even among companies in tough markets angling for any and every edge they can get over their competitors, in decade after decade, over problem domain after problem domain after problem domain, there is this empty howling wasteland of happy and productive people using not-LISP, writing world-conquering systems that do just-fine-thanks and the claimed benefits of LISP just don't seem to be making any noticable dent in anything.

Therefore, they are over-hyped.

BrendanEich9y ago

I agree that claims for Blub (for any value of "Blub") are too often over-hyped. But don't make stuff up in the course of justifying your reasonable point against hype.

I met John McCarthy in 1977. In college, a professor (Ruth Davis, I think; SCU EECS department) brought in someone who taught Friedman's "The Little LISPer". By the time I got to Netscape, I had read SICP. I knew enough about LISP to be dangerous.

But as I've said many times, and Netscape principals have confirmed, the reason JS isn't Scheme is because Netscape did the Java deal with Sun by the time I hired on (after I was recruited with "come and do Scheme in the browser"), and that meant the "sidekick language" had to "look like Java".

There was no "chose to write". Netscape management gave the MILLJ order; Netscape source was C (mostly), JS ("Mocha") was supposed to go server-side via "LiveWire" as well as embed in Navigator, and I was a C hacker. These are the reasons for the new language and its first implementation language.

jodrellblank9y ago

But don't make stuff up in the course of justifying your reasonable point against hype

Where's the fun in that? ;) No, but really - I apologize for claiming there wasn't enough general LISP enthusiasm around when you were at college to affect you, and for not actually looking into the history of JS before making statements about how/why it happened.

JS design being partly a pre-made business decision - that's something I really should have known by now.

lisper9y ago

You are overlooking a crucial fact: very often people who want to use Lisp are not allowed to by their management precisely because "no one uses it" and so the experiment never gets done.

I was the lead engineer on the first release of AdWords. I wanted to write it in Lisp, but I was not allowed to, being forced against my strenuous objections to to it in Java. So now AdWords is a Java success story rather than the Lisp success story it might have been not because Java is better (it certainly wasn't -- it was a disaster) but because my boss issued an edict.

This has happened to me many times in my career. The one time I was actually allowed to use Lisp in a project that I did not have direct control over (the DS1 remote agent) it was an overwhelming technical success. In fact, management tried and failed to get the software rewritten in C++, so this was actually a controlled experiment.

AnimalMuppet9y ago

If that were the (only) issue, we ought to see Lisp used more in startups than in established businesses, because in startups, you don't have some manager who doesn't know Lisp and is managing to minimize is perceived (not necessarily actual) technical risk.

But in fact I'm not sure that we see more Lisp use in startups, either. That could be because they aren't taught it in school. (Many startup founders haven't had the chance to pick it up on the job. For that matter, many programmers haven't had the chance to pick it up on the job.)

On the controlled experiment: Why was that? I mean, it has to be possible to rewrite anything in C++ (Turing complete, and all that - but possibly at the price of Greenspun's Tenth Law). Was it because the people who tried didn't know anything about Lisp? (Were they working from the source, or from the spec, or from the program documentation?) Were they just not as good programmers as the Lisp programmers (and don't say "if they were as good, they would have been using Lisp" - that wasn't their assignment). Did they have less time, less resources? Why didn't/couldn't they do it?

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