I think that Mathias could have use different terms for the things he was talking about. My proposal:
Identifier - a piece of data identifying an entity (like id, hash, or something else)
Identity - data basic description of an entity (like name, email, gender, etc)
The presentation was rather slow, although the topic is interesting in general.
Great talk. Most of the object oriented code smells were covered. Everything was presented in a nice and understandable way with great examples.
Nice coverage of how Sylius works and how extensible it is.
The concept itself that Mathias talked about is definitely an important one although I heard the most of it on the workshop. Therefore I must admit that the talk itself was not very interesting to me.
Although the example was clear, I think that it's hard to keep everyone's intention with one slide, maybe it's better to somehow base your talk around more slides which would keep the audience on their toes.
A great talk. I really like the tonality and the casual approach by Rob Allen, makes everything more understandable.
Everything that was important about the Dependancy Injection was said here.
Nice talk, easy to follow, good communication with the audience. Some concepts of multi layered architecture well explained.
Great workshop about the concept that was almost totally unknown to me.
I learned much and I will definitely start exploring DDD more after this.
Last talk, but not the least. I really liked the concept of this presentation. Each "sin" hits the target and they all together make a nice composition. Brandon is a great presenter.
I follow Marco's blog, open-source contributions, social networks activity and I agree with and support most of his attitudes and views of things. That is why I already knew much of concepts and things that were presented here, but I never had a chance to hear in the form of a nicely thought talk.
I really liked points and advices on optional dependencies, logic switch parameters, mixed params/return values, value objects.
Marco is obviously a great presenter and he really nailed it with this talk which IMHO was the best one on this conference. This is how a conference talk should look like.