On: 2^3^4 - a comparison of math packages

[lisper]

Oh, it's different all right:

    ? (expt (expt 2 3) 4)
    4096
    ? (reduce 'expt '(2 3 4))
    4096
    ? (expt 2 (expt 3 4))
    2417851639229258349412352
    ? (expt 3 (expt 4 5))
     373391848741020043532959754184866588225409776783734007750636931722079040617265251229993688938803977220468765065431475158108727054592160858581351336982809187314191748594262580938807019951956404285571818041046681288797402925517668012340617298396574731619152386723046235125934896058590588284654793540505936202376547807442730582144527058988756251452817793413352141920744623027518729185432862375737063985485319476416926263819972887006907013899256524297198527698749274196276811060702333710356481