... guesses, and their hypotheses in conversations and writings based upon the certain and absorbed ground of information. In other words, their utterance is normally said to consist of their attitudes ... the celebrated linguists have paid great attention to discussing Modality in general and Epistemic modality in particular. Palmer (Mood and Modality, 1986), for example, investigates and restricts ... information which is easily heard, seen, read, and understood. Similarly, apparent, obvious, and evident share something in common in terms of meaning that indicates the state of being easily...