A minister has to be able to read a clock. At noon, it's time to go home and turn up the pot roast and get the peas out of the freezer.
A large wildlife book, start to finish, could take one to two years, but then I would expect to get several good (nature) magazine features off the back of this, plus of course a lot of stock.
Well, one thing, you got to stand in a courtroom and listen to a judge sentencing you to 25 years in prison before you realize that freedom of expression can no longer be taken for granted.