Faith itself isn't rational.
No. In fact, the argument made is perfectly rational.
The premise is that you can fly. That's a believe that you hold.
From there, the reasoning is flawless. IF you can fly, then you can just fly down and land unharmed.
The problem is that the premise is false.
And you can't know it is false because you believe it on faith, which is to say: without evidence.
Believing things without evidence is irrational. It leads to holding false beliefs and subsequently making bad decisions whenever those beliefs serve as a premise in an argument or reasoning process.
The point you are replying to in that quote, is not an argument concerning the existence of god.
It's a point concerning your claim that you can't tell if a certain experience is the result of placebo effect or actually from a god.
My example illustrated that if you can't "tell" which one it is with an appropriate level of certainty, there still are ways to consider which one would be
more likely.
And if one option is a
common phenomenon that
demonstrably happens and is
known to happen, while the other is blind assertion of undemonstrable, undetectable magic...
Then guess which one you should go for if you care about rationality...
Both are faith based beliefs that can't be demonstrated to be real.
Things that aren't supported by rational evidence, never are...
They both require both.
Neither can be rationally demonstrated.
Neither has evidence.
That's a hypothetical that in my experience doesn't occur most of the time.
A "god belief" almost never comes alone. These are a very small minority. Like some kind of vague deism.
The vast, vast, vast majority of god believers are theists who follow a specific religion.
God belief almost NEVER comes alone.
Off course. He follows a religion, after all.
As said, believing things on bad or no evidence, is irrational.
In my book, that makes religious faith irrational.
You say this. But for them, it is an integral part of their god belief.
And as said already, God beliefs almost never come alone. There's practically ALWAYS baggage attached in terms of myths, culture, purpose, intent, punishment, reward, rules to live by, rituals, etc.
I'm sorry, but you just can't detach these things from god beliefs and pretend it is true for most people.
It simply isn't.