If "originally designed" refers to the ten-days-in-May Mocha then == on unlike type operands evaluated to false. I've told why this changed later many times, e.

If "originally designed" refers to the ten-days-in-May Mocha then == on unlike type operands evaluated to false. I've told why this changed later many times, e.g., https://twitter.com/BrendanEich/status/1440088359473324036 https://twitter.com/BrendanEich/status/1440088359473324036.