Ella and Asymptote

I dropped by to visit Ella at her coffe shop. I haven't seen her in a while.

Then I took my coffee and wandered over to the little park next door. Looking at the abstract wall...

 Up close, I saw this...

A voice behind me said, "It's an asymptotic graph."

I know the man but he made me promise not to shoot his picture or use his name. He has prematurely white hair. Call him D.

I said, "Hey D, what are you doing here?"

"That doesn't matter. That is the mark of the Church of GUI. Asymptotes approaching infinity."

"What the hell are you talking about?"

He gave me a piece of paper. "See this?"

Asymptote

A line and a curve approach infinitely but never touch.

We ride from left to right between the top and the bottom, between the giddy heights and the bottomless pit.

When we can no longer climb the giddy heights we jump infinity and fall into the bottomless pit then climb out.

Again.

"Yeah I see it."

"That is what it's about."

"What? I don't understand."

"The giddy heights and the bottomless pits. Jumping infinity. It explains everything."