The First Digital Medium

I believe that the first digital media was lightning, making the first digital medium the atmosphere.

The atmosphere produces both visual and audio, lightning and thunder, through the transmission of electricity. Electricity on, electricity off. It uses binary to create light-shows in the sky. Bearing that earth's atmosphere was created millions of years ago, this digital media has been around for quite some time. Although this media satisfies some definitions, unfortunately it does not satisfy others which bring into account human expression. But although not human expression, lightning may be the self-expression of another.