> why do you think lightweight uses will ever scale to lots of cores?

Because the cores will be there, regardless. At some point, machines will be able to do a lot of background activity, learn about what we are doing, so that local agentic models can act as better intelligent assistants. I don't know what will be the killer app for the kilocore desktop - nobody knows that, but when PARC made a workstation with bit-mapped graphics out of a semi custom built minicomputer that could easily serve a department of text terminals we got things like GUIs, WYSYWIG, Smalltalk, and a lot of other fancy things nobody imagined back then.

You can try to invent the future using current tech, or you might just try to see what's possible with tomorrow's tools and observe it first hand.