Is there a lack of direct logical connection between the premise and the hypothesis? Premise: Bland slips up when he states it is to  enable him to proceed on his path to the murder of Duncan.  Hypothesis: Bland makes an error by acknowledging his intent to follow his path to the murder of Duncan.
Bland slips up when he states it is to  enable him to proceed on his path to the murder of Duncan. ###Bland makes an error by acknowledging his intent to follow his path to the murder of Duncan.