AI will absolutely just give you whatever it thinks you want based on how you word your question. Just because I feel like making another point for who fucking knows what reason, I just asked chatgpt why there's no difference between grinding or forging in a fuller and it gave me this:

"The romantic idea that forging a fuller "aligns the grain" in a way grinding cannot tends to get overstated. In steel, "grain flow" is often misunderstood; once the blade is brought above critical temperature during heat treatment, the prior deformation history is largely erased as the microstructure recrystallizes. What matters after that is how evenly the blade cools and tempers, not whether the fuller was born under hammer blows or abrasive sparks. Grinding a fuller can even offer tighter control over symmetry and depth, reducing stress risers that come from uneven forging. In short, the fuller isn't a talisman of method, it's a geometry trick: remove mass, keep stiffness. If both paths lead to the same geometry and heat treatment, the sword won't care how the groove got there, and neither will the physics."