O, bildiğim kadarıyla, güvenilir bir arkadaştır.
- He is, so far as I know, a reliable friend.
Bildiğim kadarıyla, o hâlâ bekâr.
- So far as I know, she is still unmarried.
insofar as (or that), to the extent that, to such an extent.
... very chimneys unfold as far as the eye can see ...
... As far as your amygdala is concerned, all of those are ...