ST3:
Valkris: Qu'vaD lI' net tu'bej. "You will find it useful."
Kruge: vaj Daleghpu'. "Then you have seen it?"

ST5:
tlhIngan ghaH wa' vub'e'. "One of the hostages is a Klingon."
[...]
vaj toDDujDaj ngeHbej DIvI'. "That means the Federation will be sending
a rescue ship of its own."

In both cases, {vaj} is a conclusion, it never means the same as
{meqvammo'}, which focusses on a given reason to do something.

Good examples. vaj can spring from a concept that isn't a reason for whatever follows the vaj.

-- 
SuStel
http://trimboli.name