I'd also suggest that they try and break as many things as possible. Try the edge cases, try putting numbers into boxes where you'd only really expect a text string, try putting negative numbers in boxes where you'd only expect positive numbers, etc.
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I'd also suggest that they try and break as many things as possible. Try the edge cases, try putting numbers into boxes where you'd only really expect a text string, try putting negative numbers in boxes where you'd only expect positive numbers, etc.