Well missingling over and over we hear the piece of advice “Don’t make assumptions!”
What a grossly over-simplistic piece of trite. We all make assumptions every second of every day. If we had to test every single assumption, we would be rendered hopeless. Is that really your boss, or is it an identical twin? Is it really Monday, or have you been in a coma for 20 years? Are the traffic lights really going to stay red for long enough to cross the road? Is that tiger really going to eat me - perhaps it really just wants to be friends. We can only survive by making continuous assumptions.
A key aspect of intelligence is being able to fill in the partial facts we know about the world with intelligent assumptions.
So, ignore this piece of advice. Make assumptions when assumptions are called for!