Addition still takes time though doesn&#x27;t it? The idea is I could start an addition operation, and then be notified in some way when it&#x27;s done.<p>I think the idea most similar to what the grandparent wants is instruction-level dataflow, where programs are DAGs, and instructions are only run when their inputs are ready, rather than when a program counter reaches them.<p>Physical dataflow machines were built that did this in hardware.