“Bonjour, Pierre! How is your basement renovation project coming along?”
“Well, I think it will take a lot longer than I expected ...”
A few years ago, I spent the day on the set of This Old House. One of the stars told me that if they choose a home to renovate, they tell the homeowner to add X months to the project. One day of filming equals at least one lost day of work.
Having your project stopped for an archeological dig makes this pale in comparison.