What does "my partner is a tech nerd" mean? Does he know what he's talking about, when it comes to code? Do you know what you're talking about, when it comes

What does "my partner is a tech nerd" mean? Does he know what he's talking about, when it comes to code? Do you know what you're talking about, when it comes to code? Who knows more? Why do you not trust his suggestion to throw more hardware at the problem? Why does he think more hardware will matter?