The author ends with "Also, if I’ve gone too far, missed something important, gotten anything wrong, or otherwise need some education myself, please let me know

The author ends with "Also, if I’ve gone too far, missed something important, gotten anything wrong, or otherwise need some education myself, please let me know so I can a) learn and b) correct my error." so allow me to offer the following: When you spend a substantial portion of your post sniping at the competition you come across as an arrogant arse. For example, second sentence in the post is "My overall impressions of Datomic were pretty negative, but this blog post isn’t about that." Then remove this line! It adds nothing to the point you claim you want to make. Same thing in the next section regarding append-only B-trees, and then we have snark directed at RethinkDB, and so on. I got about half-way through the post before I just skimmed to the end as I was sick of the arrogance and insults, and I was beginning to doubt your authority to comment on this area as a result -- if you have substantial points to make you don't need to cover them up with this crap.