It was certainly a lot less refined, and you couldn't just sit down in front of an Alto and get to work using today's knowledge. However they were very close,

It was certainly a lot less refined, and you couldn't just sit down in front of an Alto and get to work using today's knowledge. However they were very close, the original Lisa and Mac OSs were essentially polish on the broader theme. That doesn't diminish the fact they actually brought it to the masses - however their work was undeniably derivative.