Either way this is also opinion based.
There hasn't been a revolutionary change in technology in the last 20 years. I don't consider smart phones to be revolutionary. I consider going to the moon revolutionary and catching a rocket sort of revolutionary.
Actually I take that back I predict mars as a possible break through along with LLMs, but we got lucky with musk.
catching a rocket is very impressive, but its just a lower cost method for earth orbit. it does unlock megaconstellations tho
AI is the step function change. The irony is that it became so pervasive and intertwined with slop people like you forget that what it does now (write all code) was unheard of just a couple years ago. ai surpassed the hype, now it’s popular to talk shit about it.
For decades, progress mostly shifted physical constraints or communication bandwidth. Faster chips, better networks, cheaper storage. Those move slopes, not discontinuities. Humans still had to think, reason, design, write, debug. The bottleneck stayed human cognition.
LLMs changed that. Not marginally. Qualitatively.
The input to the function used to be “a human with training.” The output was plans, code, explanations, synthesis. Now the same class of output can be produced on demand, at scale, by a machine, with latency measured in seconds and cost approaching zero. That is a step change in effective cognitive throughput.
This is why “video calling another continent” feels incremental. It reduces friction in moving information between humans. AI reduces or removes the human from parts of the loop entirely.
You can argue about ceilings, reliability, or long term limits. Fine. But the step already happened. Tasks that were categorically human two years ago are now automatable enough to be economically and practically useful.
That is the function. And it jumped.
However, from your later comments, it sounds as though you feel the only operating definition of a "breakthrough" is a change inducing a rapid rise in labor extraction / conventional productivity. I could not disagree more strongly with this opinion, as I find this definition utterly defies intuition. It rejects many, if not most, changes in scientific understanding that do not directly induce a discontinuty in labor extraction. But admittedly if one restricts the definition of a breakthrough in this way, then, well, you're probably about right. (Though I don't see what Mars has to do with labor extraction.)
To which AI is the only technology that has enough distance to be classified as a “breakthrough”.
A description that matches reality is realist, not pessimist.
This means that most people who you would term as "realists" are likely optimists and not realists at all.