Between the four books there is a lot of paper being printed, with chemicals which have to be sources somewhere.
But a bit more serious there are different angles to this:
One is that the formalization Knuth did, is basis for the way other research on computer science has been setup.
His work on TeX as part of writing the books has great impact on how scientific reports are being written, which themselves have consequences.
And then there is all the consequence while implementing technology. How optimisations by better algorithms enable data mining, replacing manual labor, ...
Now of course impact differs. Not everybody is building V2 rockets (as well as Saturn rockets) like von Braun did, but there are many wheels in the machinery.
I myself am a small wheel in building database engines. The software is used by sports clubs to manage their members, shop owners to manage their inventory, companies to run their ads and air craft carriers to replicate strategic data across the ship, so that if one part is damaged, the other can still operate. If I were to leave, the organisation would continue developing, but the work has impact.
But a bit more serious there are different angles to this:
One is that the formalization Knuth did, is basis for the way other research on computer science has been setup.
His work on TeX as part of writing the books has great impact on how scientific reports are being written, which themselves have consequences.
And then there is all the consequence while implementing technology. How optimisations by better algorithms enable data mining, replacing manual labor, ...
Now of course impact differs. Not everybody is building V2 rockets (as well as Saturn rockets) like von Braun did, but there are many wheels in the machinery.
I myself am a small wheel in building database engines. The software is used by sports clubs to manage their members, shop owners to manage their inventory, companies to run their ads and air craft carriers to replicate strategic data across the ship, so that if one part is damaged, the other can still operate. If I were to leave, the organisation would continue developing, but the work has impact.