I'll try to explain this better. Sometimes you hope to get a system that works without constant tweaking. Once you've adjusted it properly, it should work with

I'll try to explain this better. Sometimes you hope to get a system that works without constant tweaking. Once you've adjusted it properly, it should work without adjusting the settings. So there's one setting that works for all the inputs you care about. But instead you have a system that you have to adjust all the time. For every input, you can get it to work. But you're never done tweaking. This is actually fine if you're expecting the user to do some work. Consider doing a Google search, seeing what you get, and then modifying your query when you didn't get what you want. It sucks if you're hoping to go into fully-automatic mode. You didn't get that, you got an interactive application. (Or maybe the tweaks aren't reasonable for the user to make themselves, so you got nothing?) So the scam, if there is one, is selling something as fully-automated when it's not. It's a tool that requires a person to work with a machine, and you're never going to be able to take the human out of the loop. (Let's say you're hoping for a driverless car but you never quite get there.) Often, it's not the end of the world. An interactive tool can be very valuable! But you need to set your expectations appropriately.