Now I already know you don't have any idea what you're talking about but
explain to us what you, as a pilot, think the difference is between a
heading and a vector. And what do you think the difference is to the
controller?

Greg Esres wrote:
As counter-intuitive as it sounds radar contact isn't required to
issue an initial vector.

The words "initial vector" do not appear in FAAO 7110.65,

They don't need to. A heading is a vector.


so the only
reason that you say radar isn't required for an initial vector is that
you're interpreting "heading" to mean vector.

Because that's what it means to everybody except you.



That is not supported
by the .65. The section you cited, 5-8-2 contains the following:

-----------snip-----------------
5-8-2 Initial Heading
Before departure, assign the initial heading to be flown if a
departing aircraft is to be vectored immediately after takeoff.

Yes, if you want the aircraft on a specific heading for separation
purposes for example, then you give that vector with the takeoff
clearance. As opposed to waiting until after he takes off or after you
ship him to the departure controller.


-----------snip-----------------

Why isn't this section entitled "Initial Vector" ? My answer:
because it isn't a vector.

All headings given are vectors.