+/ 5 2 1 ⍝ A reduction 8
⍴ A 4 18 3 5899 6 7 ⍴ +⌿⍤2 ⊢A ⍝ A big reduction 4 18 3 5899 7
"I don't see how it could be faster"
"This is as fast as the CPU can do computation"