[lptk]

> The first example disproved ionforce's claim that default values cannot be constructed dynamically.

But I don't think that is what they meant. I think they meant something along the lines of what I said above:

> an expression with an arbitrary number of subexpressions may be synthesized, the shape of which depends on the types involves

[YorkshireSeason]

OK, maybe I misunderstood ionforce. I don't deny that type-driven synthesis is a core element of implicits.