>>10449418

Barron is essentially the looking glass, most don't realize he is actually more important than the Don, he is a time traveller, whom relays important information back to his father from the future

1. Barron Time travels into the future

2. Returns and Relays information from the future back to the Don, so that he may know which critical events played out to his advantage and which were unsuccessful.

3. Through this process, along with a number of fail safes, dead man switches, enhanced game theory, etc… they are able to stay above and beyond their opponents.

>>10449567

His recent growth spurt is actually a by-product of time travel which causes the limbs/bones to be stretched, I don't have a specific explanation of how this is caused