Your spouse insists X. You remember !X. What is the rational course of action?
If X matters, look for further evidence beyond your and your spouse's recollections, at least one of which is known to be wrong, but not which.
Um, what point were you making?
On Quora: What are some stupid things smart people do? Examples of common types of stupidity that are typical of otherwise very smart people.
Lee Semel's answer in particular would make a great post here: a "to don't" list. You may wish to go through and identify the cognitive bias or biases each is an example of.