At least she'd adjusted to the idea that he could be treated as a rational adult.

I'm a rational adult, I assumed they were.

The ideal is to be the rational adult.

What's wrong with a society where supposedly rational adults have to "sneak around" to enjoy a drink within the walls of their own home?

"If we could just discuss this like rational adults."

As rational adults we all know this.

Second, most rational adults would agree that high school is no place for romantic relationships for exactly the reasons stated.

Sharon wasn't old enough that any rational adult would take her seriously if she repeated what her sister said.

It's very different from today, when rational adults can talk things over and try to change their lives.

As rational adults, we all acknowledge that Santa is not real.