Sometimes people think, “If only I had ____ed, things would have been different” or “If I _____, things will go well.”
These are understandable beliefs, but they are not facts.
About the past, we can’t know with certainty if our efforts would have made what happened better, worse, or made no difference. The universe, and the human lives lived within it, are complex. We can estimate probabilities, but not state certainties.
About the future, we may hope our efforts will have favorable results, but we can’t know with certainty if our efforts today will make things better, worse, or make no difference.
What can we do?
We can increase the likelihood of achieving desired results by using the best evidence we can find to assess probabilities, then to make plans based on assessed probabilities.
I use the term “evidence” to mean information used to support or question a claim. Some of that information may be mistaken, incomplete, or misinterpreted. In comparison, a fact is a statement about reality that has been checked, tested, and is supported by evidence. I define “reality” as what actually exists, as opposed to what is believed to exist.
Based on facts and evidence about reality, probabilities are estimates of how likely something is to happen. From facts and evidence, we can assess probabilities, and make plans.
Plans based on facts, evidence, and assessed probabilities are more likely to match what will really happen. Beliefs may be genuine hopes and wishes, even regarded as knowledge, but they do not require evidence to exist.
In this framework, knowledge is defined as statements about reality that are supported by evidence. Intuition, a sense of recognition or resonance, or an “inner knowing” may be experienced as knowledge, but without evidence these experiences are still considered beliefs, not based on evidence or on facts supported by evidence.
If a plan matches how things actually work, actions based on that plan are more likely to produce desired results than plans based on beliefs about what might work.
Why did I write this? I’m trying to decide what to do next based on what’s real and probable. Why is that important? However well-intentioned, beliefs – untested and unsupported by the best available evidence – when applied as care or advice, can cause harm. My hypothesis is that next steps based on how things really are and really work are more likely to produce desired outcomes than steps based on what is believed to work.
In the midst of the complexity and uncertainty of each life, our lives, and our local, national, and global contexts, I will do my best to use facts, evidence, and assessed probabilities to guide next steps.
Note
“What are the facts?” is a question asked in Dialectical Behavior Therapy (DBT), a research-backed protocol for mental health challenges founded by Marsha Linehan, Ph.D.
Last updated 05/03/2026, 7:06 AM U.S. Eastern
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