> Software is a tool. Tools that are used often require maintenance, which in itself is not a novel concept. In that context, maintenance is fixing your screwd

> Software is a tool. Tools that are used often require maintenance, which in itself is not a novel concept. In that context, maintenance is fixing your screwdriver. Technical debt is having a fixed-head screwdriver instead of another with swappable heads: it might be ok for you if you mainly use that one, but if you're constantly needing to buy new screwdrivers and carry them, it's extra money and work. And the same as technical debt, you might decide to buy first a fixed -head screwdriver because you're not certain about your future needs and it's just cheaper and easier, and then switch to a swappable head when you are certain you need it.