The giant is scale as character — the enormous other whose footsteps shake your ground. It names powers outsized to yours: the institution, parent, or problem at whose ankles you strategize; and Jack's lesson, that giants can be out-nimbled.
Positive Resonance
The outsized out-nimbled, giants' shoulders climbed for the view
Shadow Aspect
Ground shaken by another's steps, scale mistaken for right
Nuances
Footsteps approaching: the outsized nearing
At the giant's table: your scale at their setting
Out-nimbling: Jack's strategy against tonnage
Standing on giants' shoulders: scale borrowed for sight