“36. … As I have found that the respondent was mistaken in believing that the claimant was using his mobile phone, to dismiss him for that misconduct without a reasonable investigation, falls outside the range of reasonable responses. …” 33. The first part of this sentence is nothing to the point. If the Employment Judge had made no finding that the Respondent had been mistaken, the dismissal would still have been outside the range of reasonable responses if there had been no reasonable investigation. Conversely, it would still have been fair if there had been a reasonable investigation and a reasonable conclusion. The reference by the Employment Judge to her own finding at this point is problematic. 34. Thirdly, and to my mind crucially in reaching my conclusion, is the absence of any real process of reviewing the Respondent’s actual reasoning for dismissal. Section 98(4) required the Employment Judge to identify the Respondent’s process of reasoning and to say whether or not it fell within the band of reasonable responses. At this point, I accept a submission made to me by Mr Nuttman about the length of Ms Molyneux’s observation. This was plainly an important feature for the Respondent both at the disciplinary and at the appeal level. Ms Molyneux said that she saw the driver being distracted for a significant length of time before he drew close to her and she could actually see the mobile phone. The Respondent attached significance to this point; and arguably it would be unlikely that the Claimant would be distracted by two different things in succession, more likely that what Ms Molyneux saw at the end of the period of observation was what had been distracting the Claimant all along. The Employment Judge was not bound to accept that point of view, but section 98(4) required her to identify it, consider it and decide whether it was within the band of reasonable responses. The only real reference to this point, at the end of paragraph 31 of the Employment Judge’s Reasons, is not satisfactory. 35. Similar points apply to the question of investigation. Evidence was given on the Respondent’s behalf at the hearing as to why it did not wait for the telephone records and as to why it did not consider further investigation of the Claimant’s eyesight to be necessary. The Employment Judge’s task was to identify that reasoning and say why it was unreasonable. 36. For these reasons, therefore, I have concluded that the Employment Judge has fallen into the error of substitution. 37. I turn back, then, to the perversity grounds. As separate individual grounds, I would not uphold them. So far as telephone records are concerned, Ms Molyneux’s initial impression had been that the Claimant was “touching the mobile phone as if he was texting”