Genome-scale evidence comes from repeated physical readout budgets. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.
highlighted = computed this step
Instrument days multiply readout
With 2 instruments and 3 runs per day, the readout budget is 12000 bases per day.
Bday=2⋅3⋅2000=12000
Target divided by daily output gives days
A 24000 base training target takes 2 days. These are toy values, not historical Human Genome Project logistics.