In a recent post /u/justpickanyusername wrote: "I have found negative assertion is a great way to quickly put you on the offensive and not on the defensive end of any conversation. It is a classic pressure flip. Most people feel like they need to explain themselves. Let them. Negative assertion is like winding up a toy and letting it run in whatever direction you want. Now you are in the driver’s seat and can steer the conversation any way you would like."

Thank you! I've had this done to my so many times, and never understand why I was subsequently engaged in an endless, painful explanation until now.

What is the best way to handle a negative assertion?