Bridge Seating / food for thought

[Cy Shuster]

Capleton's paper 
(http://www.amarilli.co.uk/academic/acoustics/false_beats.pdf) notes that 
once the string no longer touches the bridge cap, the bridge pin is 
effectively a cantilevered termination.

Isn't it possible that when the string touches the pin above the bridge its 
leverage makes for a less-secure termination, effectively increasing the 
speaking length?

And why can't a .003mm increase in speaking length happen by a .003mm 
movement of the bridge pin?

--Cy--