However, it only takes one day of adulthood to realise that it might have been better for our adolescent brains to have learned how to manage taxes—or more specifically, where your money goes, why the government claims certain fractions of it, and how to get the best returns on your investments. The function of mitochondria and Newton's third law may be permanently imprinted in our memory, but it only takes one day of adulthood to realise this. The frightening truth is that you're probably not the only one who blindly signs on the dotted line at the end of the fiscal year or nods obediently whenever the phrases TDS or GST are mentioned in casual conversation. Do a quick show of hands among your extended friend group as your DIY experiment for the day, and odds are you'll discover that the bulk of the working crowd is in your boat.