from weld ref doc:

A managed bean is a Java class. The basic lifecycle and semantics of a managed bean are defined by the Managed Beans specification.

Plz define semantics in this context.  I've seen this word hundreds of times but not sure exactly what it means (guessing: meaning or rules or relationships or symbols?)

If a Java class meets the requirements to be a Managed bean, but I don't want it to be a managed bean for some stupid reason, how do I configure/annotate that?  Or is there not a concept of an unmanaged bean in CDI?

And which JSR is the managed beans spec?

btw, Managed beans support the @PostConstruct and @PreDestroy lifecycle callbacks. this seems vaguely familiar to Seam POJOs...

do managed beans have any advantages over session beans??

Message-driven and entity beans are by nature non-contextual objects and may not be injected
into other objects.

so entity beans in this context refers to JPA entity classes, correct?  I thought we could inject entity classes into other Seam components as long as they were marked with @Name at the type level.  Or maybe I'm wrong, maybe that made them referencable from JSF EL expressions...

Isn't a regular DTO JavaBean non-contextual?  So we can't inject a DAO JavaBean into another managed bean in Weld??