You can't trust such a critical function to just anybody or just any tool. Spreadsheets are slow. If the spreadsheet is large or has multiple pages, this can take a while. It is built with sophisticated computer languages and runs 20-30 times faster than a spreadsheet. Spreadsheets aren't databases.
Spreadsheets read and write simple PC files.
This limits the supporting information they can retrieve and exploit. ProjectPAK, on the other hand, uses a powerful relational database that enables information such as contacts, jobs, library line items, estimates, notes, assemblies, costs, etc. to be interconnected and shared. All of the complexity of managing the underlying information, however, is hidden from the user. Database applications such as ProjectPAK are more powerful than file based spreadsheets. Stepping up to a database application like ProjectPAK can have a synergistic affect on your organization's productivity and improve estimating accuracy, re-use, and ease of use.