Back in the 90s part of my job was to change the daily backup tape on a computer when I got there in the morning. It was an 8GB cassette the size of a deck of cards, and I remember marveling that I could carry 8 Gigabytes in my shirt pocket. Now you can get thumb drives for $20 that hold many times more, and thousands of times more than my first hard drive. (which cost about a grand)