Barbarian observes:
It's true. If you aren't claiming that organic material can't be preserved for millions of years, then it's not you who must provide the evidence. Whoever made the claim is laying low right now, um?
I merely expressed skepticism, and invited anyone who supported the claim to provide some evidence for it. So far, all we've gotten is "I don't believe it could last that long, so it can't be so."
Which, I'm sure you'll agree, is pretty weak.
Please tell me you are kidding me with that post,
Afraid not. YEC aren't very good at supporting their claims. You'll notice that no one was willing to step up and show that organic material can't be preserved for millions of year.
how can anyone prove a negative?
For example, we can show that mammals and birds are not as closely related as birds and crocodiles. We can show that it's impossible for the Grand Canyon to have been excavated in a single large flood.
But as you see, no one is willing to provide any evidence for the YE claim.
Beside that though -
You are who made the claim that there is evidence that soft tissue can last millions of years
(Barbarian considers) Well, actually, I expressed skepticism about the claim that it couldn't. Didn't say there was evidence for it, but I now that you mention it, I suppose there is. For example, we can show the rocks in which the T Rex was found, are millions of years old. That's an important difference between science and creationism.
If someone steps up and provides some evidence for your claim, I'll note that there are exceptions, of course.