-- what weighs in that balance, because to go back for one second, in practical, economic terms I gather the difference between a copyright that lasts for 100 years, lasts for 1,000 years, lasts forever, is probably something less than 1,000 -- on $1,000 a penny.
Going back one second is important.
It's never directly stated the importance of going back for one second, only what can be achieved. It's only implied that it's important, but it's not in the context. 
( z1 important :ARG1 ( z2 go :ARG1 ( z3 temporal-quantity :quant 1 :unit ( z4 second ) ) :direction ( z5 back ) ) )