[mnarayan01]

  // ... Well typed things ...
  if (arbitrary_well_typed_function()) {
    v = 0xF00 + "bar"
  }
  // ... Well typed things ...

Let's say this program is well typed iff `arbitrary_well_typed_function()` is falsy. If a static type checker can not compute `arbitrary_well_typed_function`, it needs to make a trade-off which a dynamic type checker need not.

[tom_mellior]

OK. Yes, static type systems need to make trade-offs. If this was your entire point, your original talk about undecidability was hiding it well.

[mnarayan01]

You got my point in your first comment in this thread. Unless that comment was the result of hours of striving, it doesn't seem as if the point was hidden well. If you did spend hours working at it, then I apologize and commend you on your success.