"So, if she had the opportunity to compare you side by side within two days she would have two fresh sets of data to work off. However, if you leave it a few days then Minister Granger will be working off memories of you. And I suspect that a memory of your time together will be somewhat nostalgic. Particularly if Cormac McLaggen is as much of a wet fart as his Uncle Tiberius. Therefore the next 8 days will be of McLaggen’s boorish behaviour, set against your perfectly suave and gentlemanly behaviour of the previous weeks. Minister Granger will be waiting for the next opportunity to see if you really are as good as her memories would suggest."