Answered Prayer Fallacy

All religious belief is unsupported by objective evidence. Religious people who believe in divine intervention usually claim that their prayers are answered by God. Since physics tells us that the Laws of nature are regular and fixed and if they were subject to intervention by a God (miracle?), we would expect dramatic effects within our reality. Science has never confirmed any such event and since such would be an extraordinary event requiring extraordinary evidence, it is reasonable to conclude that prayer effects are most likely the result of the fallacy of Post Hoc Ergo Propter (After this, therefore because of this): correlation interpreted as causation. Regarding the claims of medical miracles, the realities of spontaneous remission and unusual events are ignored.

A Subjective Experiment For The Effectiveness Of Prayer

"Many Christians are trained to believe that God always answers their prayers. But to challenge that idea, I pose a simple hypothetical question: What if God did NOT answer your prayer? Giving this question serious thought will reveal what you're actually praying for and quickly prompt you to consider clear criteria for an answered vs unanswered prayer. On the other hand, if you cannot come up with an answer to this question, then you're probably trying to obscure your own view of what happens after you pray and what you're even praying for."

Truth conforms with reality. Reality appears to be determined and random by all scientific observations. Science (which is Latin for knowledge, and is JUSTIFIED, true belief) has never accepted a miracle. Prayer attempts to violate these findings. Oh, and "The answer is no" is an unjustified obfuscation. 

The video below does a good job in presenting an easy and practical way to test the effects of prayer subjectively:

What if God did NOT Answer Your Prayer?

The Prayer Challenge That Will Never Take Place

Go ahead, I dare you, theists! Give it a shot.

The Ultimate Prayer Challenge to PROVE God

New Testament Mention Of Prayer's Effects Are Falsified

"Christian parents are in a bind. Does prayer work the way Jesus said it does? Prayer as described by Jesus is powerful medicine, though there are different kinds of medicine. A bottle of sleeping pills left in the kitchen where small children could find it is reckless … unless it’s homeopathic medicine, which is just pretend medicine. Is prayer like homeopathic medicine—powerful in name only?"

 Irresponsible Use of the Awesome Power of Prayer

A Look At The Incoherence Of Prayer

"What’s the point of prayer? Why bother if God knows everything?"

How Does Prayer Work? And What Does that Say About God?

Prayer

"The largest and most scientifically rigorous study of prayer's efficacy, the 2006 STEP project, found no significant difference whether subjects were prayed for or not, except some negative effects among those who knew they were receiving prayers."  (source)