It's just that it's easier to retrodict than to predict.    From Wordnik.com.  [Uncovering Secrets, Big And Small] Reference

Nakata taps commands, gets a retrodict bearing on the epicenter.    From Wordnik.com.  [Starfish] Reference

Especially, that is, if one wants to believe that GCMs can reliably retrodict temperature.    From Wordnik.com.  [Rutherford, Mann et al [2005] « Climate Audit] Reference

But even the climate modelers bemoan their inability to retrodict the last ten years of global “warming”.    From Wordnik.com.  [The Volokh Conspiracy » AsteroidGate] Reference

But ID creationism does not really retrodict anything; it only predicts that we will never figure out how, say, certain flagella evolved.    From Wordnik.com.  [Evolution Videos and More - The Panda's Thumb] Reference

According to classical mechanics, from that data (the “information”) and the laws of physics, we can reliably predict the precise state of the universe at every moment in the future — and retrodict the prior states of the universe at every moment in the past.    From Wordnik.com.  [The Black Hole War] Reference

Once it becomes independent of the priors, you can also retrodict the past in the same way as you predict the future and the arrow of time would become invisible (assuming a complete knowledge of the system).    From Wordnik.com.  [The Reference Frame] Reference

However from what I’ve read none of the models used are spot-on accurate when run in reverse to “retrodict” past climate.    From Wordnik.com.  [Matthew Yglesias » The Inconveniently Boring Truth] Reference

2. If you simply roll the tape backwards, i.e. use the ordinary physics equations to retrodict the entropy of earlier stages of the universe, you’ll wind up figuring that the entropy of the past was greater than the present.    From Wordnik.com.  [Two Mosquitoes in a Mud Hole - The Panda's Thumb] Reference