I finished the time portal last night.
It’s nothing fancy, really. Just a room-temperature superconducting toroid.
The fancy stuff is in the control mechanism.
Well, that and the math I needed to establish the displacement field.
Have I gone back in time yet?
No. Haven’t had the chance.
Every time I try to go through the field, something comes through.
And, every now and then, someone.
Me.
Another me.
I stood there, and I laughed at myself.
Then I apologized, waved, and was gone.
Or was that me?
Want to see it?
Not yet. It’s not done yet.
When?
Soon.