There’s an interesting related question, and I apologize if it’s been asked before, but what evidence would it take for the Christians out there to believe a person who claims to be Jesus’s second coming? Or would it not be a question of evidence at all, but rather of faith?
I would imagine that Christians would run into the same problems of evidence dealing with claims of returned messiahs as I’d run into dealing with claims of any divinity at all.
Daniel
Are you kidding? I would recognize him the same way I would if my own sainted mother returned.
We won’t need to look for him he will know who his people are.
1 Thessalonians 4:16-18
16 For the Lord Himself will descend from heaven with a shout, with the voice of an archangel, and with the trumpet of God. And the dead in Christ will rise first. 17 Then we who are alive and remain shall be caught up together with them in the clouds to meet the Lord in the air. And thus we shall always be with the Lord. 18 Therefore comfort one another with these words.
Sorry to be a literalist, but wouldn’t you recognize your own sainted mother by her appearance, her mannerisms, her voice, her memories? I don’t think any of those would help you recognize Jesus on His return – especially since He might return as a balding korean woman.
Daniel
He will be the one who sweeps me up into His arms, smothering me with kisses and telling me He loves me, as He carries me into His kingdom to live with Him forever.
Again, evidentiary problems. Suppose some guy comes along, says, “I’m Jesus, I love you, mwa mwa mwa,” and rises into the air with you.
Is that enough for you to believe that he’s really Jesus? or do you look to see if maybe he’s on a wire, or if maybe somebody slipped you a mickey?
At what point do you believe that it’s really Jesus, not an especially clever charlatan? Because obviously there have been a lot of charlatans and crazy people claiming to be Jesus returned.
Me, I’d look for the wire, try to figure out if I were drugged, before i believed it was Jesus.
Once I find myself in the Kingdom of Heaven, it’ll be easier for me to believe (although I’ll still wonder if I’m not seeing a combination of #1 and #2 of my above hypotheses). But maybe it’d be different for you.
I also didn’t realize that Jesus would return with an immediate passage to Heaven booked – I kind of thought the consensus was that he’d be around for awhile before the Rapture. Maybe I should hit the Books again.
Daniel
Can’t speak to that. I don’t worship a consensus. 
Jesus is already here - in fact he mows my lawn once a week.
And we can define the theist as someone who not only believes there is a golf course in the galaxy next door, but is already paying the greens fees to play on it.
—Distinctions without a difference. If an allegedly morally perfect God (again, presuming a faithful representation) isn’t telling the truth, then whatever He is doing it is equally immoral and a waste of our time.—
Was this answer meant as misdirection, or was it unintentionally off-topic? The point is Lewis’ argument that we must assume Jesus is lord unless we are willing to argue that he was nuts or a liar. That’s a false dilemna, plain and simple: it abuses people’s misunderstandings of binary distinctions. You can’t simply ASSUME that Jesus is God for an argument that is trying to establish that.
—They have enough evidence of God to satisfy themselves, so in a philosophical sense they are agnostic, not blind faith.—
“Agnostic” even in its weakest conventional sense, means “without knowledge.” Agnostics don’t know god: but that doesn’t rule out things like feeling that there is one, believing on faith, or fidelism.
Taoism
Shit happens.
Buddhism
If shit happens, it’s not really shit.
Islam
If shit happens, it’s the will of Allah.
Protestantism
Shit happens because you don’t work hard enough.
Judaism
Why does this shit always happen to us?
Hinduism
This shit happened before.
Catholicism
Shit happens because you’re bad.
Hare Krishna
Shit happens rama rama.
T.V. Evangelism
Send more shit.
Atheism
No shit.
Jehova’s Witness
Knock knock, shit happens.
Hedonism
There’s nothing like a good shit happening.
Christian Science
Shit happens in your mind.
Agnosticism
Maybe shit happens, maybe it doesn’t.
Rastafarianism
Let’s smoke this shit.
Existentialism
What is shit anyway?
Stoicism
This shit doesn’t bother me.
I believe that I posted recently in another thread that if such an event were to happen to me, I would consider it an awesome hallucination!
Although I’ll consider the possibility of very technologically-advanced aliens performing such actions. What are the ‘true believers’ going to do if highly advanced aliens study Earth’s religions, drop in and convince everyone they are the ‘real thing’, and after you all climb aboard the Space Ferry to Heaven you discover that the Bible is actually a poorly-translated manual for keeping slaves under control? (Or a cookbook, eh?)
If something like this happened to me, I’d try to keep an open mind and see what came next. Although I understand the chances of any of us agnostics/atheists getting swept up to heaven are pretty remote.
I don’t think it’s possible to come up with a universally accepted definition of atheist or agnostic, anymore than we can get everyone to agree on what a Christian is. When talking about my own beliefs, I usually try to give a brief description, rather than a one-word label. And I try not assume I know what another person believes until they’ve actually told me.