The broader point is that semiconductor research often gets more interesting as you move down the stack.

AI accelerators are the first derivative.
Memory, networking, power and advanced packaging are the second.
But the third derivative is where you find the companies enabling those enablers: the equipment, materials and chemicals that scale with the underlying complexity.

Taesung, Eternal Precision, MEC and Ajinomoto offer four examples of how this research process plays out in the area of large AI accelerator packages and ABF substrates. (7/7)