Please help there is no right or wrong answer for this quest

Please help~ there is no right or wrong answer for this question, it\'s completely abstract. I need help explaining how to come to a conclusion about this concept. Yes, there is no numerical data to come up with an exact answer because there is no right or wrong answer.

QUESTION: You hear of a kickstarter campaign for an electro-mechanical suit that purports to convert and store your everyday movements into electric energy to run your household. Estimate numerically how many suits is needed to supply the electric energy of a typical house. Should you invest in this company?

Solution

I will invest in this company

because no. of suits is 5

to convert into mechanical energy from electrical energy

it works as inverse transducer