context: It is highly likely that Greg is a frog. We doubt that Mary went to the kitchen. It is probably the case that John took the milk.
hypothesis: It is highly unlikely that greg is a frog, and John took the milk.
valid_hypothesis: There is a better than even chance that greg is a frog, and John took the milk.
invalid_hypothesis: It is highly unlikely that greg is a frog, and John took the milk.
hypothesis_assertion: Greg is a frog, and John took the milk.