If your going in for heart surgery, but your doctor has trouble bellying up to your examination table just to give you an examination? What would you infer?
If you consistently see him fumble his stethoscope, pen, ipad, notes, etc.? What would you infer?
If his fingers are so fat that he can't handle the scalpel anymore, what would you infer?
If a guy comes into work every day hung over? What would you infer.
If a guy is charged with getting a portion of a team project ready for presentation, but consistently comes unprepared? What would you infer?
When you have a guy on your project team who is constantly out sick, but you're more than sure it's self induced? What would you infer?
When you have a guy on your staff who is the highest paid, but is always out sick come presentation time? What would you infer?
If a guy on your staff wins the lottery, then he's constantly out sick, never has his work done, comes to work consistently unprepared, and you are left holding the bag???? What would you infer?
Might you then.... when it's really oersonal, and personally impacting you in a negative way, cause you to make a few reasonable judgements about this guy's character?