I had the same experience, but now I'm wondering - is ActiveRecord much maligned? It is news to me. It handles simple stuff really well, takes a lot of the pain out of relationships, and doesn't prevent you reaching for SQL when required. I also haven't ever found a good replacement for AR migrations, which makes schema changes + keeping a record of those changes absolutely seamless. Are there some alternatives I should be investigating?
I'll have to take your word for it – I'm curious if you have tried it though. I can certainly imagine that it might be feasible (even at lower resolutions) with enough stirring of the 'linear algebra pile'.
Not meaning to rain on your parade though – congratulations on a great idea!
> Unlike other systems, Density is anonymous at source. We can't fingerprint or track you if we wanted to.
I wonder how true this statement is, given how accurately we can now identify people based on just their walking gait – see "Human Gait Recognition Based on Gait Energy" paper[1].
The 'sensor' view on density.io that attempts to illustrate this point appears to convey just as much as the sample images in the paper.