The internet is broken. Starting from scratch, here's how I'd fix it.

[Commentary] My big idea is that we have to fix the internet. After forty years, it has begun to corrode, both itself and us. It is still a marvelous and miraculous invention, but now there are bugs in the foundation, bats in the belfry, and trolls in the basement. If we could start from scratch, here’s what I think we would do:

Create a system that enables content producers to negotiate with aggregators and search engines to get a royalty whenever their content is used, like ASCAP has negotiated for public performances and radio airings of its members’ works.
Embed a simple digital wallet and currency for quick and easy small payments for songs, blogs, articles, and whatever other digital content is for sale.
Encode emails with an authenticated return or originating address.
Enforce critical properties and security at the lowest levels of the system possible, such as in the hardware or in the programming language, instead of leaving it to programmers to incorporate security into every line of code they write.
Build chips and machines that update the notion of an internet packet. For those who want, their packets could be encoded or tagged with metadata that describe what they contain and give the rules for how it can be used.

[Walter Isaacson is the CEO of the Aspen Institute]