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AWS CEO says replacing junior devs with AI is 'one of the dumbest ideas'

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Re: AWS CEO says replacing junior devs with AI is 'one of the dumbest ideas'

#181
post #128
post #7

Relevant post by Kent Beck from 12th Dec 2025: The Bet On Juniors Just Got Better https://tidyfirst.substack.com/p/the-bet-on-juniors-just-got... > The juniors working this way compress their ramp dramatically. Tasks that used to take days take hours. Not because the AI does the work, but because the AI collapses the search space. Instead of spending three hours figuring out which API to use, they spend twenty minute…

Isn't the struggling with docs and learning how and where to find the answers part of the learning process? I would argue a machine that short circuits the process of getting stuck in obtuse documentation is actually harmful long term...

1965: learning how to punch your own punch cards is part of the learning process

1995: struggling with docs and learning how and where to find the answers part of the learning process

2005: struggling with stackoverflow and learning how to find answers to questions that others have asked before quickly is part of the learning process

2015: using search to find answers is part of the learning process

2025: using AI to get answers is part of the learning process

...

Re: AWS CEO says replacing junior devs with AI is 'one of the dumbest ideas'

#182

Earlier quoted context omitted.

It may well be. Books have tons of useful expository material that you may not find in docs. A library has related books sitting in close proximity to one another. I don't know how many times I've gone to a library looking for one thing but ended up finding something much more interesting. Or to just go to the library with no end goal in mind...

Speaking as a junior, I’m happy to do this on my own (and do!). Conversations like this are always well intentioned and friction truly is super useful to learning. But the ‘…’ in these conversations seems to always be implicating that we should inject friction. There’s no need. I have peers who aren’t interested in learning at all. Adding friction to their process doesn’t force them to learn. Meanwhile adding frictio…

I’ll also make the observation that the extra time spent is very valuable if your objective solely is learning, but often the Business™ needs require something working ASAP

Re: AWS CEO says replacing junior devs with AI is 'one of the dumbest ideas'

#183
post #128
post #7

Relevant post by Kent Beck from 12th Dec 2025: The Bet On Juniors Just Got Better https://tidyfirst.substack.com/p/the-bet-on-juniors-just-got... > The juniors working this way compress their ramp dramatically. Tasks that used to take days take hours. Not because the AI does the work, but because the AI collapses the search space. Instead of spending three hours figuring out which API to use, they spend twenty minute…

Isn't the struggling with docs and learning how and where to find the answers part of the learning process? I would argue a machine that short circuits the process of getting stuck in obtuse documentation is actually harmful long term...

I recall similar arguments being made against search engines: People who had built up a library of internal knowledge about where and how to find things didn't like that it had become so easy to search for resources.

The arguments were similar, too: What will you do if Google goes down? What if Google gives the wrong answer? What if you become dependent on Google? Yet I'm willing to bet that everyone reading this uses search engines as a tool to find what they need quickly on a daily basis.

Re: AWS CEO says replacing junior devs with AI is 'one of the dumbest ideas'

#184
post #7

Relevant post by Kent Beck from 12th Dec 2025: The Bet On Juniors Just Got Better https://tidyfirst.substack.com/p/the-bet-on-juniors-just-got... > The juniors working this way compress their ramp dramatically. Tasks that used to take days take hours. Not because the AI does the work, but because the AI collapses the search space. Instead of spending three hours figuring out which API to use, they spend twenty minute…

The amount of copium in the replies to this is just amazing. It’s amazing.

Re: AWS CEO says replacing junior devs with AI is 'one of the dumbest ideas'

#186
post #128

Earlier quoted context omitted.

Isn't the struggling with docs and learning how and where to find the answers part of the learning process? I would argue a machine that short circuits the process of getting stuck in obtuse documentation is actually harmful long term...

I recall similar arguments being made against search engines: People who had built up a library of internal knowledge about where and how to find things didn't like that it had become so easy to search for resources. The arguments were similar, too: What will you do if Google goes down? What if Google gives the wrong answer? What if you become dependent on Google? Yet I'm willing to bet that everyone reading this use…

I argue that there is a strong, strong benefit to reading the docs: you often pick up additional context and details that would be missing in a summary.

Microsoft docs are a really good example of this where just looking through the ToC on the left usually exposes me to some capability or feature of the tooling that 1) I was not previously aware of and 2) I was not explicitly searching for.

The point is that the path to a singular answer can often include discovery of unrelated insight along the way. When you only get the answer to what you are asking, you lose that process of organic discovery of the broader surface area of the tooling or platform you are operating in.

I would liken AI search/summaries to visiting only the well-known, touristy spots. Sure, you can get shuttled to that restaurant or that spot that everyone visits and posts on socials, but in traveling that way, you will miss all of the other amazing food, shops, and sights along the way that you might encounter by walking instead. Reading the docs is more like exploring the random nooks and crannies and finding experiences you weren't expecting and ultimately knowing more about the place you visited than if you had only visited the major tourist destinations.

As a senior-dev, I have generally a good idea of what to ask for because I have built many systems and learned many things along the way. A junior dev? They may not know what to ask for and therefore, may never discover those "detours" that would yield additional insights to tuck into the manifolds of their brains for future reference. For the junior dev, it's like the only trip they will experience is one where they just go to the well known tourist traps instead of exploring and discovering.

Re: AWS CEO says replacing junior devs with AI is 'one of the dumbest ideas'

#187

Interesting take... I'm seeing a pattern... People think AI can do it all... BUT I see juniors often are the ones who actually understand AI tools better than seniors... That's what AWS CEO points out... He said juniors are usually the most experienced with AI tools, so cutting them makes no sense... He also mentioned they are usually the least expensive, so there's little cost saving... AND he warned that without a…

"BUT I see juniors often are the ones who actually understand AI tools better than seniors" Sorry, what does that mean exactly ? Are you claiming that a junior dev knows how to ask the right prompts better than a Senior dev ?

If AI is just prompts to you, you fall into the "don't know how to use it" group.

Re: AWS CEO says replacing junior devs with AI is 'one of the dumbest ideas'

#188
post #128
post #7

Relevant post by Kent Beck from 12th Dec 2025: The Bet On Juniors Just Got Better https://tidyfirst.substack.com/p/the-bet-on-juniors-just-got... > The juniors working this way compress their ramp dramatically. Tasks that used to take days take hours. Not because the AI does the work, but because the AI collapses the search space. Instead of spending three hours figuring out which API to use, they spend twenty minute…

Isn't the struggling with docs and learning how and where to find the answers part of the learning process? I would argue a machine that short circuits the process of getting stuck in obtuse documentation is actually harmful long term...

No, trying stuff out is the valuable process. How I search for information changed (dramatically) in the last 20 years I've been programming. My intuition about how programs work is still relevant - you'll still see graybeards saying "there's a paper from 70s talking about that" for every "new" fad in programming, and they are usually right.

So if AI gets you iterating faster and testing your assumptions/hypothesis I would say that's a net win. If you're just begging it to solve the problem for you with different wording - then yeah you are reducing yourself to a shitty LLM proxy.

Re: AWS CEO says replacing junior devs with AI is 'one of the dumbest ideas'

#189

Interesting take... I'm seeing a pattern... People think AI can do it all... BUT I see juniors often are the ones who actually understand AI tools better than seniors... That's what AWS CEO points out... He said juniors are usually the most experienced with AI tools, so cutting them makes no sense... He also mentioned they are usually the least expensive, so there's little cost saving... AND he warned that without a…

7/10 senior devs (usually fellas 50+) will get mad at you for trying to use Claude Code. Me: “dude it writes better code than crap you write in your mush middle-age brain.” Also me: “I also have mush brain.”

I think LLM is a reflection of human intelligence. If we humans become dumber as a result of LLM, LLMs will also become dumber. I’d like to think in some dystopian world, LLM’s trained from pre 2023 data will be sought after.

Re: AWS CEO says replacing junior devs with AI is 'one of the dumbest ideas'

#190

I believe the idea is to not stop hiring juniors. Instead it's to replace anybody that commands a high salary with a team of cheaper juniors armed with LLM's. The idea is more about dragging down average pay than never hiring anybody. At least for now.

And then all those unemployed seniors with extensive domain knowledge use AI to speedrun the creation of competition and you need to spend $$$$ to buy them out and shut them down. Solid idea.
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