By Troy Harvey and Porter Child

A Trillion Times Faster

What if code could run, not just forwards, but backwards too? That was Edward Fredkin’s dream of reversible computing. While automatic differentiation isn’t exactly reversible computing, it’s a close proxy for solving the large number of computing problems that take the form of: “I have the answer… what was the question?” (aka “I know what I want to come out of this function, but I don’t know the inputs that will produce those outputs”). …

This fall, PassiveLogic has participated as one of the selected members of Plug and Play’s Real Estate & Construction startup cohort. Involvement with Plug and Play has included a kick off presentation in September, a focus week of meeting with corporate strategics in October, and multiple trips to Sunnyvale to develop relationships with Plug and Play affiliated companies and individuals.

This season concludes with the Winter Summit held on December 4th. Passivelogic is one of six startups to represent the Real Estate & Construction program in this Summit. …

Originally published on

User experience or ‘UX’ is the fundamental pursuit of all human-interactive technology. There is no larger market for human-centric technology than the world’s buildings infrastructure.

The human race first walked out of caves laboring to build structures, places of habitation, environments of assembly, marketplaces for commerce, and the cities to house them — all in the pursuit of better quality of life. Indeed, the very nature of the built environment and study of architecture is fundamentally the oldest pursuit of “user experience.”

UX in Decline

Today, the buildings industry has a user experience crisis on its hands. We essentially hit “Peak UX” decades ago, and by some metrics we are in UX decline. A broad survey of “smart building” products shows that our technologies…

Republished from

We all spend the first hour of a meeting establishing what we mean by smart, how smart is smart, navigating disbelief, educating about new technology, and finally arriving at common ground. There is a better way.

The problem with today’s “smart buildings” is they’re not actually smart. At best, they are merely “connected.” Of course, we all know this to be true, but as an industry, we lack the vocabulary to distinguish how smart “smart” is, and thus, we lean on ambiguous terminology. …

Troy Harvey

CEO of PassiveLogic. Changing the Future of Automated Buildings.

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