observ/computed calles dependent observables immediatly

[emilbayes]

I was a bit surprised that observ/computed tries to get the value of each of it's dependent observables upon initiation. This is contrary to how observ values themselves work. Or am I misunderstanding something?

[Raynos]

With observ you give it the initial value.

With observ/computed you give it a list of observables and it reads the value.

The important invariant here is that any observ must ALWAYS have a current value. For observ/computed to work it must get it's initial value; it only asks for the initial value again when the upstream observables changed.

[emilbayes]

Alright, I must have misunderstood the part where observ differs from observable, but your answer makes sense. Thanks!