Yes, I am, because I understand how cruise missiles find their way and if you did too you wouldn't see that as a threat.
One of the first methods used by cruise missiles was inertial guidance, which is still used today and allows the missile to fly along a flight path programmed prior to launch. [16] Another guidance method is terrain contour matching (TERCOM), which compares a terrain map to the current terrain the missile is flying over to ensure the missile is flying on the correct path.
Preparation of the maps required the route to be flown by an aircraft. A radar on the aircraft was set to a fixed angle and made horizontal scans of the land in front. The timing of the return signal indicated the range to the landform and produced an amplitude modulated (AM) signal. This was sent to a light source and recorded on 35 mm film, advancing the film and taking a picture at indicated times. The film could then be processed and copied for use in multiple missiles.[citation needed]
In the missile, a similar radar produced the same signal. A second system scanned the frames of film against a photocell and produced a similar AM signal. By comparing the points along the scan where the brightness changed rapidly, which could be picked out easily by simple electronics, the system could compare the left-right path of the missile compared with that of the pathfinding aircraft. Errors between the two signals drove corrections in the autopilot needed to bring the missile back onto its programmed flight path.[citation needed]
https://en.m.wikipedia.org/wiki/TERCOM
pats on head
Do you see now my little cruise missile?
If you actually listened to me you would understand I am talking about the odd ways we can create maps within us and use them to tell truth from lies no matter which susposedly infallible guidance systems governing our daily lives are compromised or not compromised, if we need to :)
TL;DR Go read a book
Also, the map that ultimately I am talking about is a high resolution gravity map of the Earth, which is pretty damn cool actually as an idea for determining a consistent basis for where things are on Earth relative to other things.
I guess maybe this is the Land Surveyor in me coming out, I naturally distrust the idea of GPS not GPS itself because I can see the subversive power in a 15 year old theodolite that can establish truths far more precise than you can imagine just with basic trigonemetry and finely-made-but-fundamentally-simple electronics and nobody else needed except a rodperson. People want things to have a precise location but they end up taking out their philosophical existential denial that maybe things don't have ever have a precise location on Land Surveyors through the contorted stories of real estate dealings and the way they clash with the unstable reality beneath us. A reality we still pretend our misunderstanding of exclusively comes from a lack of fidelity in our instrumentation and methods.