Reminds me of a guy who implemented a pre-screen on his phone calls to stop spammers. He said he wanted to use something simple at first and that he planned to

Reminds me of a guy who implemented a pre-screen on his phone calls to stop spammers. He said he wanted to use something simple at first and that he planned to tweak it depending upon how many spammers go through. So his phase one it asks "Dial 1 to continue". But that was enough to stop all the spam calls so he never had to improve it.