Isn it faster to get a semantic engine running than a rulebase?
A semantic engine needs to be trained and retrained for each new term. M.A.I. is ready to operate as soon as it is installed with its basic rules governing each of the taxonomy terms for indexing. The system is functional immediately and its performance improves with feedback from every document editors index. If one is going to embed M.A.I. into some other system, of course you have to wait until the rest of the system is ready.