What-If and Scope

What-If Rate

A different repeated-doubling rate changes the final displayed checkpoint exactly.

highlighted = computed this step

What-If Rate

The what-if learning rate is 3/4.

what-if learning rate=3/4\text{what-if learning rate} = 3/4
Learning-rate what-ifThe table recomputes the unit-eight time under a different rate.learning-rate what-ifvaluewhat-if rate3/4unit-eight time675/16reduction721/80

What-If Unit Time

At unit 8, the what-if unit time is 675/16 hours.

what-if unit time=675/16\text{what-if unit time} = 675/16
Learning curve unit timeThe chart compares the base checkpoint table with the what-if rate.learning curve unit timefirst unit 100; rate 4/5; milestone sum 1476/5unitdoublingsbase timewhat-if timedifference10100100021807554264225/431/483256/5675/16721/80unit 1u1 100unit 2u2 80unit 4u4 64unit 8u8 256/5what-if unit 8 675/16; reduction 721/80deterministic repeated-doubling arithmetic only

Unit-Time Reduction

The exact unit-time reduction is 721/80 hours.

reduction=721/80\text{reduction} = 721/80
Learning curve unit timeThe chart compares the base checkpoint table with the what-if rate.learning curve unit timefirst unit 100; rate 4/5; milestone sum 1476/5unitdoublingsbase timewhat-if timedifference10100100021807554264225/431/483256/5675/16721/80unit 1u1 100unit 2u2 80unit 4u4 64unit 8u8 256/5what-if unit 8 675/16; reduction 721/80deterministic repeated-doubling arithmetic only