In August of 1984, I attended, with my friend Miguel Azevedo Coutinho, a professor of civil engineering at the Instituto Superior Tecnico (IST) of the Technical University of Lisbon, the ASCE Hydraulics Division Specialty Conference at Coeur D'Alene, Idaho.1

We flew from San Diego to Seattle, rented a Lincoln Towne Car at the airport, and headed east to Idaho while managing to do some sightseeing along the way.

As the Conference came to an end, Miguel and I prepared to return to Seattle. I told him I would go get the car and pick him up at the curb at the hotel entrance.

Miguel was waiting for me as I pulled up to the curb. At the same time he got into the passenger seat, another conference attendee also entered the car through the rear door. I thought Miguel had invited him, so I didn't say anything. Likewise, Miguel thought I had invited him, so he didn't say anything either.

A couple of blocks down the road, noticing something strange, our absent-minded, would-be intruder said: "Driver, is this the limo?"

 1  Ponce, V. M.. 1984. Kinematic shock: Sensitivity analysis.  Proceedings, ASCE Hydraulics Division Specialty Conference, Couer D'Alene. Idaho, August 13-17, 880-884.


Roman acueduct in Segovia, Spain.

Roman acueduct in Segovia, Spain.