What are the advantages and disatvanages of spreadsheets over pen and paper?

What are the advantages and disatvanages of spreadsheets over pen and paper?
Advantages areAbility to enter a formula complex or Non-complex and by changing the data use the same formula countless times in a what if scenario.Copy and paste to X amount of cells - saving hours of recalcualtion on large sypheresCalculate large amonts of interactive formulas when only one number is changed in base dataCalculate through 255 sheets of complex dataimport - export data to other systems thus linking a range of data sourcesSave the users significant hours hours calculatingmultiple print optionsdoubles as a databaseCuts down entry / calculating errors- Pen / PaperNone of the aboveincreased issues of humans writing down data thus mis-calculatingcannot save huge complex data files on a 30mmx15mm usb penUsing spreadsheed someone has entered complex calculations in to reduces the human ability to learn and use maths