What is this type, and what is its function?
The LII-IEI is very versatile. With their strong Ti, they can understand most any principle they make the effort to study. Although Te EM brings them to grief, by using their programming skill the LII-IEI can make up for their own shortcomings.
All around this type there appear to be great, exciting ideas that for one reason or another go unrealized. Sometimes there are Te reasons for the inaction, but in other cases the cause is emotions. Fear of criticism hangs in the air as a blockade to the realization of ideas. To remove this fear is to permit the exchange of ideas.
By enabling the exchange of ideas, social potential is unleashed. By freeing the people of their fear of each other, they are permitted to perform their natural social functions.
The role of LII-IEI is to permit the intellectual growth of society by relieving criticism, and allowing people to be themselves. However, caution must be taken, because some roles are best left unperformed. Thus the LII-IEI must understand the ethics of the people around them to know how people will react in a given hypothetical scenario. It is the role of LII-IEI-Cs in particular to provide this understanding, so that LII-IEI-D can "uncork" various events in the history of technological growth and enable the fulfillment of good deeds.
Of course, the LII-IEI doesn't have to merely "uncork" the wellspring of ideas. They can fulfill these exciting possibilities themselves. But for them to act alone is highly inefficient because it ignores the function of the socion, to develop and implement ideas quickly. What might take an LII-IEI a year might be accomplished by a specialist in a few days, or even one. It is not the function of LII-IEIs to do great things but to free others from the hesitation to do them. To get society moving and exploring where fear had inhibited it. To encourage where it is needed, and to show courage when it is required. To observe those who could make a great idea possible, and when they are willing remove every obstacle to their performance. To see the future implemented, one person at a time.