Truth decay is a problem. No, not tooth decay — truth decay refers to a vanishing reliance on facts and analysis that seems to grow stronger every day. The term was coined by an employee of the RAND Corporation. There's even been a book about it.

We've reached a point where many of us no longer agree on basic facts. Opinions drown them out, and the line between fact and opinion has begun to blur. Not only does this make it hard to talk to one another, it also impedes progress. That's if anyone can even agree on what progress is any more.

About a third of Americans rely on news sources they don't consider very reliable.

Fake news is only a small part of the problem, but it's a hotly debated one. Because of this, a recent Rand survey focused on the news sources people use and how reliable they consider them.

It found that about a third of Americans rely on news sources they don't consider very reliable. A report on the survey findings suggests that this may be due to a lack of time, not a lack of caring.

People who rely on print and broadcast media were more likely to consider them reliable, while those who opt for social media and peers for news don't see those platforms as reliable. Yet both groups continue to get their news from these sources, suggesting that there's more than reliability involved in their choice.

As you might expect, there was an age gap. Younger people were more likely to get news from social media and peers, while older individuals were more likely to rely on print publications and broadcast television.

An encouraging finding was that nearly three-quarters of the people said they always or sometimes seek out alternate viewpoints when catching up on the news — 54 percent said sometimes, 20 percent said always or almost always. This suggests that most people do look outside of/venture beyond their political bubble.

Interestingly, liberals were more likely than conservatives to report that they never or almost never seek different views. And married people were more than three times as likely as singles to rate their peers as the most reliable source for news.

On the issue of whether or not the news is getting worse, people were split. About 44 percent said that news is as reliable now as in the past, while 41 percent said it has become less reliable. The other 15 percent said that it is now more reliable than it used to be.

The survey was based on a national sample of over 2,500 people. For more details, see the Rand Corporation's report.