If you read the OP carefully, you will find that it is an implicit announcement. Google hasn't announced it explicitly. But the amount of hard work and time tha

If you read the OP carefully, you will find that it is an implicit announcement. Google hasn't announced it explicitly. But the amount of hard work and time that they have put in, takes them years ahead. The number 400 is open to discussion and interpretations. Read some of the other comments to find out how it can be interpreted.