An old memo is not authority, but it is history. Rohan Mehta on why the firm archives replaced guidance in place, how a superseded memo describes itself, and what that does for the client who saw the old figure.
A time entry is evidence, not a sales pitch. Rohan Mehta on factual narratives, why the signed letter comes before the invoice, and how a private research note and a shared methods note are billed differently.
A well-written number from last year is still last year's number. Rohan Mehta on the firm's rule for checking the period before the figure, with the fictional equipment expensing memos the firm uses to train it.