Oh, okay... are you referring to fuzzy logic where statements have a partial truth value?
I'm (mostly) referring to the case where the truth value is either true or false, but where you aren't sure, so you can say "80% probability this is your phone".
There are also cases where truth values aren't as clear cut, which I also mention, such as the question of whether or not something IS a chair. (Is a chair taped to the ceiling still a chair? Is a log I sit on out in the middle of the forest a chair? Etc.)
The phone either belongs to you or not. Schrödingers cat is either dead or alive, but not 80% dead as some people assert.