So, we have a F-16 chilling on the ramp, showing us its tailfeathers:
Interestingly enough though, inboard of the all-flying stabilator sections, there is a fixed stabilizer section (this is quite clearly visible on the right due to what the stab is doing on that side). This isn't universal on stabilator-equipped aircraft though, or even fighters, as the F-22 appears to have its all-flying horizontal tail hinged at the fuselage joints:
and the trimmable stabilizers on airliners are hinged at the fuselage-stabilizer joint as well:
So, why is it that the F-16 doesn't follow this pattern? Is there some aerodynamic design reason for that?