Benjamin Franklin Tool

He used a chart that had column of "element" ( is like a varible that influenced to your decision) then a column called importance factor ( there you put a number from 1-10 according to the importance of that variable for you) and finally the columns of the options you are considering ( write a number to each option in each variable according to the influence a variable has in that option), when you have finished, you multiply the number of importance factor by the number placed in the option in the variable; yo make that with all the cells and the last step is to sum the columns of your options: 45
70
60
TOTAL: 155
and the column with the bigger result is the best option.