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[Jason Gross <jasongross9 AT gmail.com>]

Hi,

Can someone explain to me the error message in the following code, and why the bottom snippet causes it, but the top snipped does not?

Record Foo := { foo : forall A : Set, True }.

Goal Foo.

pose (fun pf : Set -> True => @Build_Foo (fun A => pf A)) as H.

apply H.

Abort.

Goal Foo.

apply (fun pf : Set -> True => @Build_Foo (fun A => pf A)).

(* Toplevel input, characters 22-72:

Error: in : Application of lemmas whose beta-iota normal form contains

metavariables deep inside the term is not supported; try "refine" instead. *)

Thanks,

Jason