`Tacoma Narrows Bridge`

History has a way of repeating itself. You've all seen the Tacoma Narrows Bridge failure — I'm getting nods from most of you. The Tacoma Narrows failure in 1940 [1940, not 1942] was an example of making things too slender, and the winds came down. They called it Galloping Gertie. I saw it in my freshman physics class here at MIT, when they were teaching waves — you'd see the waves on this bridge.