I think if you want to perfect a construct or idea in your mind, or irl, that is Ti.
Te is all the data to support your internal processes, I think.
What you do with all that you glean is then a process of your motivations, whatever those may be, which are probably mostly influenced by ego needs, etc.
I think those with a Te dom or aux drive seem to know a lot about many things, and might seem expert at many things.
Those that are more Ti dom or aux can do many things or fix many things; sort-of like a jack of all trades.
In contrast, a Te-er wants to be an expert, or fancies himself an 'expert' even if he doesn't necessarily admit that. You feel it. A Ti-er doesn't care to appear expert, but he sort-of is in the realm of doing, versus knowing.
So when Te combines with Ni (as in an ENTJ), that expert thing, combined with an Ni knowing thing, is what makes the entj have an almost intolerable personality. I assume the same is true with Te and Si, except in a more ritualistic way.?
When Ti combines with Ne you get the inventor thing because all the Ne possibilities combine with the Ti ability to solve problems and you get innovative thought. When it combines with Se you get a working system, at least mechanistically (not necessarily socially or emotionally due to potential for lack of F).
Fun thoughts! What do you think?