If you're taking code reviews seriously, reviewing a change takes almost as long as writing it - and that's the best-case scenario.
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@fribbledom Once the requirement analysis review and solution design review is done, the implementation review is just a matter of review the application of implementation language against the solution design. If both reviewer and coder are at the same fluency level with respect to the implementation language, then the code review will be roughly the same time as implementation. (typing vs reading speed.) A discrepancy in knowledge/assumptions at any stage skews things.
