A development budget I’m reviewing has changed several times even though the overall concept hasn’t changed dramatically. Individual assumptions keep getting adjusted, and each adjustment seems reasonable when viewed by itself. Taken together, however, they are starting to create a very different financial picture from the original proposal. I’m trying to understand whether this is normal evolution or a sign that the project wasn’t defined well enough at the beginning. At what point do repeated budget adjustments indicate that a project needs to be reassessed rather than simply updated?