Awesome talk, great lessons on how to keep pushing forward.
Good talk. Manipulating via the DOM good idea. Learned a great deal, examples helpful.
It was good but jumped right in with technical details. . Some background information on the problem, and information on the technologies Ratchet/ Web sockets would have been useful if one didn't know much about them (maybe a network message diagram). Nice work overall though.
More real world examples to lengthen talk
A fantastic look at the fundamentals of graph data structures, their applications, and the logic needed to bend graphs to your will.
Too short, needed more examples.
Great speaker. Lots of info.
Enjoyed
This talk was based on a presentation targeted at first-time devs, and the same basic code sample (on how to connect to a db) appeared at least 3 times, and David explained it every time.
While there was mention of set theory and the venn diagrams to create joins, they were mentioned in-passing and not actually demonstrated.
While David obviously knows how to do all the things discussed, he read most of the talk from his notes or from the slides. The presentation would have been more effective if he had gone off-script and spoke off-the-cuff.
Another way to improve this talk would be to update the slides and examples to de-duplicate things, and to provide a little more detailed application of the skills mentioned. At least 2 slides had typos.
The content of the talk is valuable, and with a little updating is something worth presenting again at future conferences.