The amount of energy and creativity. I had an orange Handspring Visor. By default it did not have any networking. It had a cradle that you would sync up with your desktop, but the desktop software could pull stuff from the Internet. So indirectly, the Handspring Visor could access content from the Internet that had been previously retrieved. There was an amazing app that was kind of like Yelp. You could enter your location by specifying two cross streets, and then you could search businesses and read reviews. I used this PDA to manage my calendar and my contacts. With a limited amount of email. In the year 2000 I was using this thing exactly the way we all use our smart phones today. And the games were so much fun. It was truly a machine that could do anything.