I don’t drink and drive. Ever.

And I go to extreme lengths not to do so. For example, if I am going to the symphony and I think I may want to have a single glass of white wine at intermission, I will either:

  1. Arrange for a town car
  2. Take a taxi or Uber (both ways)
  3. Spend the night in a downtown hotel within walking distance of the symphony
  4. Walk home
  5. Not go.

I have no exceptions to this. It’s a one 100% rule.

Now granted, I don’t drink a lot—a total of about four glasses of white wine per year and perhaps a total of three beers a year. (After getting married over a decade ago, I seemed to lose all of my tolerance for alcohol, where even one glass of wine will result in a hangover the next day). I also know that at my weight as a male, it would be nearly impossible for one glass of wine to result in a legally elevated blood alcohol level.

But despite this, even one glass of wine will result in a small level of impairment—which may result in me making a driving mistake—and this is something I have chosen not to accept. My “never have even a single drink and then drive” rule is a 100% risk reduction rule, and it gives me great peace of mind.

So what’s the problem with this?

Well, it becomes a problem when I consider applying a 100% risk reduction rule to areas of my life that maybe I shouldn’t.

For example, I endeavor to have a 100% social media risk reduction rule to never discuss politics on Twitter. It’s not because I don’t have strong, well-formed, political opinions. I do. Instead, it’s because I feel the downside risk of engaging strangers on Twitter is much higher than any miniscule benefit of making a dent in the political debate. My personal risk is high—the upside to society is non-existent.

100% risk reduction can give peace of mind, but if applied to the wrong domain, it can take away an entire dimension of my life.