We have been told that there are multiple meanings and that we should look at things from different angles. Well, here is a look at the keystone.
THE KEYSTONE! From Atlas Shrugged. It’s all about the money, anons.
Here is a quote out of Part II when Dagny Taggart learns that Midas Mulligan is minting money.
”A mint?" she asked. "What's Mulligan doing with a mint?" Galt reached
into his pocket and dropped two small coins into the palm of her hand. They
were miniature disks of shining gold, smaller than pennies, the kind that had
not been in circulation since the days of Nat Taggart; they bore the head of
the Statue of Liberty on one side, the words "United States of America— One
Dollar" on the other, but the dates stamped upon them were of the past two
years .
"That's the money we use here," he said. "It's minted by Midas Mulligan."
"But … on whose authority?"
"That's stated on the coin— on both sides of it."
"What do you use for small change?"
"Mulligan mints that, too, in silver. We don't accept any other currency
in this valley. We accept nothing but objective values."
She was studying the coins. "This looks like . . . like something from the
first morning in the age of my ancestors."
He pointed at the valley, "Yes, doesn't it?"
She sat looking at the two thin, delicate, almost weightless drops of gold
in the palm of her hand, knowing that the whole of the Taggart
Transcontinental system had rested upon them, that this had been the keystone
supporting all the keystones, all the arches, all the girders of the Taggart
track, the Taggart Bridge, the Taggart Building. . . . She shook her head and
slipped the coins back into his hand.