A knock and strange triangles

"What does this have to do with me?" I asked.
That's the question I find myself asking when these conspiracy theorists bring me there wild ideas about some lost artifact that they claim will change our world forever.
"This is what I get for opening the door," I thought.
It's a mistake I make all the time. Every time someone comes calling at my office door I can't resist. I can't take the chance that this time it might be something worthwhile.
But every time, I'm disappointed, and sometimes mildly irritated that these people waste my time with their ridiculous ideas.
Like the guy who came in a few months ago, claiming he had information that would lead to a secret energy source that would solve the problem of the world's dwindling oil reserves.
I looked at him and told him he was the third person in a week to come to me with that idea. I admit, I lied to him. He was actually the sixth, but I wanted to spare his feelings a little.
But this time, for the first time in months, I was intrigued, even if only slightly.
"Look, this could fundamentally change the way we look at our world," the visitor said.
"I'm sure it could, but you haven't answered my question. I still want to know what this has to do with me."
The visitor paused and looked at the paper he'd been explaining to me. It was worn and faded, but I could still make out the image of a stylized triangle.
I took a closer look at the faded image. There was something familiar about it.
"I'll be damned," I whispered. "That's impossible."
The visitor sat down across from me, smiling.
"I told you it would be worth your while."
He was right. When I looked at that image, I saw something I thought I'd never see outside my parents' notebooks. I thought it was just something they'd doodled over and over, the same way I drew little trees when I was lost in thought.
But this, this was different. As far as I knew, this design had been exclusive to my parents imaginations and their doodles.
"You need to tell me where you found this. Right now."
"Perhaps a drink is in order? We've got a lot to talk about," my visitor said.
For once, I was glad I'd answered the knock at my door.