Re-sugar add, sub, mul, div to operators.
Do not redundantly use the word "func".
Round observed values to 2 digits.
Allow slopier lines.
"Infer" outliers.
Better verbiage.
Display the inference program in curve fitting.
Extend outlier and noise inference options to the advanced model.
Style tweakage following the curve fitting demo.
Start at a simple id, following curve fitting.