[hcs]

> Does it imply the computer would not give off heat?

The implication goes the other way: if the computer does not give off heat, it must be reversible.

[sadgit]

So, in a sense, heat is unrecoverable information.

[hcs]

In some sense that seems to be true.

But I just meant that while it's easy to make a reversible circuit, no tech we have today can make it as energy efficient as might be theoretically possible.