Grammar

1. It's expedient to adjust local salaries, upgrading the low-wave contingent to boost their fertility rate (, thus increasing the availability of more such workers; whereupon the surplus will entitle you to reduce their salaries, thereby providing us even more slave labor)

2. (Owing to my recent divorce and job loss, not to mention the death of two sons) I'm quite free nowadays so you may contact me anytime

Hi dalehileman,
is my grammar wrong for this sentence?'I conjecture that it will be expedient to adjust the salaries of the local population so that the low wage workers have a chance to upgrade then produce more kids and the fertility rate will increase'.
Can I use ‘birth rate’ and fertility rate’ interchangeably?

Hi Jane

Not sure exactly what you mean by "grammar" but from a purely technical point of view it seems okay. I could however suggest improvements as above

…seems to dangle. I'd have said "whereupon"

Can I use ‘birth rate’ and fertility rate’ interchangeably? I'm not sure since OneLook.com is down, but I don't think so

Hi dalehileman,
thanks a lot for your correction,I envious of your good English.

Jane, I love you, I'm flattered