This post misses that the people selling their "I built" SaaS advertised as a hobby/passion-project are just marketing something as indie that they fully intended to get rich from the beginning. It was never even a hobby worth giving away for free, it was always an attempt at making an easy fortune because they bought into the dream that infra was selling.
I like the surface dots like it is. It gives me two points of reference at the poles, and adds intuition for how long it takes to go around the sphere.
From that wikipedia article, delta is the ratio of y variance to x variance. If x variance is tiny compared to y variance (often the case in practice) then will we not get an ill-conditioned model due to the large delta?
Polars made the mistake of not maintaining row order for all operations, via the False-by-default argument of maintain_order. This is basically the billion-dollar null mistake for data frames.
The pro version comes with "Professional-grade creative suite", but they don't tell you what you're actually getting. It's just opaque corporate-speak one-liners "Make real progress toward your goals".