"On-Topic: Anything that good hackers would find interesting. That includes more than hacking and startups. If you had to reduce it to a sentence, the answer might be: anything that gratifies one's intellectual curiosity."
It's literally just a story about someone being hit by a yoga ball because someone else sat on it wrong. Like, so what?
I read it more as a story about that incident happening, then Apple introducing a pretty clever solution to it at that store, and then later at other Apple stores with yoga balls.
Sure, we cannot confirm the causal chain here for certain. But if it was indeed causal, then it is a pretty good story about a tech company taking feedback about a very small thing at an individual store level, quickly figuring out a neat fix to address it, and then rolling it out at other locations.
And yes, I would find it pretty interesting, even if it was the same story about a non-tech retailer as well. After all, how many times have we seen that famous story on the frontpage of HN about the Costco founder threatening the CEO if he ever even attempted to raise the price of Costco hotdogs? I've seen it myself quite a few times over the years, and it usually tends to generate a pretty lively discussion in the comments.
Sometimes a customers problem is software. Sometimes it’s hardware. This was a customer demonstrating an edge case and the provider rapidly deploying a simple solution that also prevents physical injury/ liability.
I personally found it intellectually gratifying, maybe you didn’t. Just scroll on past it.
Once the ball clears the ass, this material springs back to its natural position. The force of this return bounce is enough to send the light ball flying.