"The only way you can confirm it is if you get hold of it, or there's footprints or something."
Such proof has evaded even the most hardy explorers for decades. Mooney's own department closed the books on its search almost 20 years ago, following the official declaration of the species extinction in 1986.
Fossils and Aboriginal rock paintings indicate that the thylacine once lived throughout Australia and Papua New Guinea.
The dingo, a wild dog, is thought to have contributed to the tiger's demise on mainland Australia and in Papua New Guinea. The dingo competed with the thylacine for foodand also ate it.
For a while, the Bass Strait, the body of water separating Tasmania from the Australian mainland, protected the remaining Tasman tiger population.
But that safe haven vanished once Europeans discovered Tasmania in 1803: Settlers began converting large tracts of the island to sheep farming, leading to conflict between farmers and the native predator.
A bounty was introduced in 1830, and by the time the reward was terminated in 1909, more than 2000 thylacines had been killed.
The last tiger was captured in 1933 and sold to the Hobart Zoo in Tasmania. The creature died three years later.
That the Bulletin was willing to even launch a search for the Tasmanian tiger today testifies to the power of positive thinking.
By the time the three-month period ended earlier this month, the magazine's editor in chief had been inundated with "proof" from all over the world.
Photos of dogs painted with stripes were sent to the magazine's Sydney offices, along with maps, stories, and letters from a readership that was divided over whether such a search was in the best interests of any remaining animals.
"Several scientists wrote to us seeking funds for research projects connected with the thylacine," Linnell said.
"Other readers wanted to quit their jobs and spend a year on the island searching for the animalas long as we provided them with a healthy salary," he added. "A gentleman from Germany wrote to say he had been dreaming of the tiger, that he thought he now knew where it was, and that the Bulletin should sponsor his expedition based on his visions."
"We fully agreed with him. He was definitely dreaming.''
While the Bulletin has admitted defeat, those who keep the faith believe any surviving thylacines are better off staying hidden.
Mooney, the Tasmanian wildlife official, keeps in contact with the serious band of tiger believers in Tasmania. He says his good relations with the groups mean the government has effectively "outsourced" the hunt and will be among the first to know of any evidence worth examining.
"There is the argument that thylacines are on the edge of extinction, so we should stop everything [that is a threat to it], such as forestry and so on,'' Mooney noted.
"Another argument, which I tend to agree with, says things are pretty good for [the tigers] if they are there. There's a general excuse for just letting things roll along, because food, shelter, and all those things look good."
He certainly doesn't dismiss the believers as crazy or misguided.
"There is a de facto search going on, and the more people out in the bush the better."
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