Labels:bulletin board | reckoner | sky OCR: Post hoc, ergo propter hoc fallacy Latin for after this, therefore because of this, this fallacy occurs when one assumes or argues that because one event follows another the first event must have somehow caused the second. Qualifiers like often keep the ad shown from comm itting this fallacy -the ad doesn claim that "messing with marijuana or alcohol" will definitely cause your child to be home less later in life. ther efore homel