[kikibobo69]

I think the key thing is that there is no mechanism to be sure that messages you send to actors are immutable. There is a compiler plugin in development to help, though.

[gtani]

http://www.slideshare.net/jboner/akka-talk-at-geneva-jug-sca...

slide 34: immutable msgs , typed actors

[typesafety]

That's really a different issue than type safety.

[kikibobo69]

Indeed, you are right...