In article ,
The Daring Dufas wrote:

It's amazing when you think about
all the magnificent machines and civil engineering projects that were
designed with a drawing board, some big sheets of paper, a pencil and a
slide rule.

One of my favorite quotes, which I've posted here before, is from
Seymour Cray, designer of the Cray supercomputer. He was once asked what
kind of computer he used to design the beast. His reply: "I used a #2
pencil and a quadrille pad."