Benchmark: timing 1000 iterations of Schwartzian, Simple...
Schwartzian: 67 wallclock secs (66.85 usr +  0.04 sys = 66.89 CPU) @ 14.95/s (n=
1000)
    Simple: 534 wallclock secs (533.43 usr +  0.06 sys = 533.49 CPU) @  1.87/s (
n=1000)
              Rate      Simple Schwartzian
Simple      1.87/s          --        -87%
Schwartzian 14.9/s        698%          --