  In this paper it is shown that the real cause of Jackson's paradox is the use
of three-dimensional (3D) quantities, e.g., $\mathbf{E}$, $% \mathbf{B}$,
$\mathbf{F}$, $\mathbf{L}$, $\mathbf{T}$, their transformations and equations
with them. The principle of relativity is naturally satisfied and there is no
paradox when the physical reality is attributed to the 4D geometric quantities,
e.g., to the 4D torque $N$ (bivector) or, equivalently, to the 4D torques
$N_{s}$ and $N_{t}$ (1-vectors), which together contain the same physical
information as the bivector $N$.
