Chat is a bad UI pattern for development tools

I don't think Daniel's point is that Chat is generically a clunky UI and therefore Cursor cannot possibly exist. I think he's saying that to fully specify what a given computer program should do, you have to provide all kinds of details, and human language is too compressed and too sloppy to always include those details. For example, you might say "make a logon screen" but there are an infinite number of ways this could be done and until you answer a lot of questions you may not get what you want.

If you asked me two or three years ago I would have strongly agreed with this theory. I used to point out that every line of code was a decision made by a programmer and that programming languages were just better ways to convey all those decisions than human language because they eliminated ambiguity and were much terser.

I changed my mind when I saw how LLMs work. They tend to fill in the ambiguity with good defaults that are somewhere between "how everybody does it" and "how a reasonably bright junior programmer would do it".

So you say "give me a log on screen" and you get something pretty normal with Username and Password and a decent UI and some decent color choices and it works fine.

If you wanted to provide more details, you could tell it to use the background color #f9f9f9, but a part of what surprised my and caused me to change my mind on this matter was that you could also leave that out and you wouldn't get an error; you wouldn't get white text on white background; you would get a decent color that might be #f9f9f9 or might be #a1a1a1 but you saved a lot of time by not thinking about that level of detail and you got a good result.

Yeah, and in fact this is about the best-case scenario in many ways: "good defaults" that get you approximately where you want to be, with a way to update when those defaults aren't what you want.

Right now we have a ton of AI/ML/LLM folks working on this first clear challenge: better models that generate better defaults, which is great—but also will never solve the problem 100%, which is the second, less-clear challenge: there will always be times you don't want the defaults, especially as your requests become more and more high-level. It's the MS Word challenge reconstituted in the age of LLMs: everyone wants 20% of what's in Word, but it's not the same 20%. The good defaults are good except for that 20% you want to be non-default.

So there need to be ways to say "I want <this non-default thing>". Sometimes chat is enough for that, like when you can ask for a different background color. But sometimes it's really not! This is especially true when the things you want are not always obvious from limited observations of the program's behavior—where even just finding out that the "good default" isn't what you want can be hard.

Too few people are working on this latter challenge, IMO. (Full disclosure: I am one of them.)