Why @Conversational is necessary?

[hubaghdadi]

Hi.
Why @Conversational is necessary? is it some kind of second line of defense for a conversational component?
Thanks.

[pmuir]

From the manual

Specifies that a conversation scope component is conversational, meaning that no method of the component may be called unless a long-running conversation is active.

[hubaghdadi]

Yes, I know but it doesn't look so critical....