deletions | additions       diff --git a/Payam and DNA.tex b/Payam and DNA.tex  index a17d0f7..e76effc 100644  --- a/Payam and DNA.tex  +++ b/Payam and DNA.tex 
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As expected, the face-on bodies (where the motion is perpendicular to the long axis) encounter more resistance to motion than the end-on bodies -- roughly twice as much, depending on the dimensions. Doesn't this mean that, in steady-state, all the DNA will move in the longitudinal direction?  \item Perhaps this is not a problem: we consider a low-Re regime, where viscous effects are much more important than inertia. Thus the instability or propensity to change orientation might not matter.  \item Consider a stick moving through fluid at an angle; what is flow profile and where is the fluid pressure greatest? If the motivating force on the stick acts on the centre, there may still be a torque which aligns the stick in a preferred direction.  \end{itemize}  %%-------------------------------------------------