I hate to do this, but no AC has jumped in with a helpful "whoosh" and I'm feeling particularly pedantic today, so I'm going to give you a short lesson in mathematics, the internet, and life in general. I hope you find it useful (I'd like to think you will).
First, as I hope you realize, my post was a joke. A joke wrapped around what I think is an interesting idea, but a joke nonetheless. Since you didn't get the joke I have to assume you didn't get the idea. Let's start with the idea and work our way up from there. You're right about Newton and Leibniz, but what you're missing is that a lot of ideas in math have the same history; that of being developed independently by different people at around the same time. In fact, if you crack open a random math text and point to a random theorem, there is a good chance that there is either an ongoing controversy about whether the person after whom it's named is it's discoverer, or that person is uncontroversially recognized as not being responsible. This phenomena is not limited to math. Inventions and other feats of engineering have the habit of popping up in different places at the same time. Things as everyday as the locomotive, light bulb, and telephone all have multiple independent inventors credibly claiming paternity. The thing to understand here, is that this is not rare, but common. Cocks is a mathematician; he knows about the calculus kerfuffle, he knows that some things named after Newton were probably Simpson, many things named after Gauss were really other people, and many things named after other people were really Gauss (who supposedly kept a stack of unpublished theorems on his desk to hand off to editors when they had space in journals they needed to fill). What I find so interesting is that, Cocks, who knows all of this, is still surprised when he learns that another team of researchers has independently invented the same algorithm he and his team had only a few years earlier. Do you get it yet? Maybe? Let's continue.
Take a moment to reread my post and GP. You heard the Newton/Leibniz story for the first time in Calculus, right? Just like everyone else on the planet. What do you think are the odds that someone posting on Slashdot has never been in that class? I understand that text, divorced from tone of voice and body language, can be hard to interpret, but look at the tone of GP. It's very silly, right? Look at the tone of my post; much more serious, right? What seems more likely: that I'm expressing sincere skepticism at GP's claim of discovering relativity, or that I'm using a little irony to make a point? Feel free to open up a tab and google the definition of irony, I'll still be here when you get back. Okay? Good. Look how my own mock surprise at the idea of multiple independent discovery mirrors that expressed by Cocks in the article. I know, I know, you didn't RTFA. I know that 90% of Slashdot is trash, but there's a solid 10% there, so please, at least sometimes, RTFA. You'll be a smarter person, maybe a better person, for it and girls will like you more*. Now you have the idea and the joke. Is it funny? It's probably not funny after all this. That's okay, it wasn't very funny to begin with.
Finally, please, use some fucking punctuation. Your post is almost unreadable. It's hard to tell who you're saying claimed they were what first. If I didn't already know exactly what you were talking about when I read your post, I wouldn't have been able to figure it out. If you can't communicate your ideas to other people, they're effectively worthless. What if Newton discovered the calculus, but then was unable to explain it to anyone? The paternity of calculus would be even more fucked up then it already is (which is something no one wants).
So, in summary, multiple independent discovery/invention is common, have the self awareness to recognize in yourself that which you see in other people, think longer before you write (or speak), and please, please, please, for fucks sake, use some punctuation and grammar.
I sincerely hope you found this useful; good luck in all your endeavours,
(seriously; no irony this time.)
* You were probably expecting a disclaimer here, but this is actually true. Unless you are a girl, then the reverse, with boys, but even more so.