a despeito de todos os avanços tecnológicos, e de toda a conceptualização e trabalho em torno do chamado método ciêntífico o que é certo é que a aleatoriedade sempre desempenhou um papel central nos avanços. vem este desabafo a propósito deste link na wikipedia sobre cartões de crédito e como apareceram.
no entanto desta vez fico sem perceber se mais valia não se ter dado o aleatório acontecimento...
excerpto de "Magnetic Stripe Card" no site wikipedia
"The magnetic stripe
The process of attaching a magnetic stripe to a plastic card was invented by IBM under a contract with the US government for a security system. Forrest Parry, an IBM Engineer, had the idea of securing a piece of magnetic tape, the predominant storage medium at the time, to a plastic card base. He became frustrated because every adhesive he tried produced unacceptable results. The tape strip either warped or its characteristics were affected by the adhesive, rendering the tape strip unusable. After a frustrating day in the laboratory, trying to get the right adhesive, he came home with several pieces of magnetic tape and several plastic cards. As he walked in the door at home, his wife was ironing and watching TV. She immediately saw the frustration on his face and asked what was wrong. He explained the source of his frustration: inability to get the tape to "stick" to the plastic in a way that would work. She said, "Here, let me try the iron." She did and the problem was solved. The heat of the iron was just high enough to bond the tape to the card."