Postmodernism is swallowing up our world

Today I saw that gmail users can set up the time they are sending the email. This makes time relative. You can't prove that the time you have sent the email is actually the time you have sent the email. On the web page where Gmail is promoting this new feature, there are a couple of funny "testimonials":

"The entire concept of 'late' no longer exists for me. That's pretty cool. Thanks Gmail!"

"I just got two tickets to Radiohead by being the 'first' to respond to a co-worker's 'first-come, first-serve' email. Someone else had already won them, but I told everyone to check their inboxes again. Everyone sort of knows I used Custom Time on this one, but I'm denying it."

"I used to be an honest person; but now I don't have to be. It's just so much easier this way. I've gained a lot of productivity by not having to think about doing the 'right' thing."

I wonder if postmodernism started as a joke..

Update: I'm glad this was a joke.