Quite Google has never been about exactness if 1 in 10k searches serves a bad result - they dont care.
And I have written mission critical Fortran software for big telcos' and tust me nothing contreates the mind when one on Vint's reports nudges you and says this had better be right or we are both looking for anew job.
This sentence makes me dismiss the entire article:
"The trading model and real time issues are just technical problems. Google is smart enough to solve them."