US ecologist and co-author Professor Miles Silman, from Wake Forest University, said: "Just like physicists' models tell them that dark matter accounts for much of the universe, our models tell us that species too rare to find account for much of the planet's biodiversity.
The terra preta sites used to make the statistical model, he says, "just happen to be the areas where there's been intensive archaeological survey".
Years ago, NBA superstar Charles Barkley tried to make it clear to everyone that he was not a role model, famously saying "Just because I dunk a basketball doesn't mean I should raise your kids" in an iconic Nike commercial.
"If this becomes all that I'm doing and I morph into some kind of socialite/model," she said, "just shoot me".
Ms Steenkamp was first spotted with Oscar Pistorius at the South African Sports Awards in November 2012, when the model said they were just friends, South Africa's Mail and Guardian reports.
"The business model for racing is just a bad model," said Vienna.
"It is possible that online book sales are a better business model than actual bookstores," he says — just as iTunes delivers a greater variety of music at lower prices than Tower Records did.
And, they say, just as models predicted, these trends may be making climate change worse.
Mr. Canada, 58, who began putting his ideas into practice on a single block, on West 119th Street, in the mid-1990s, does not apologize for the cost of his model, saying his goals are wider than just fixing a school or two.
"That's just not our model," says Kuhlmann, 57.
