Validate number inputs before simulation

The problem

NaN, Infinity and empty fields can produce meaningless charts.

Practical procedure

Reject blank, nonfinite and out-of-range values before running any turn calculations.

Worked scenario

A blank production field should not silently become zero; a 1,000,000-turn request should be bounded.

Acceptance check

Test negative costs, decimals in integer-only fields and very large values for clear feedback.

Apply the method

Use the related interactive tool to try the concept on an inspectable example. Record the starting assumptions and expected result before changing settings, then compare what the tool actually does. Where the result differs, keep the release marked experimental and document the discrepancy.

Further reading: Relevant primary technical documentation. This guide is an educational procedure, not a substitute for independent usability or compliance review.