You are just drawing analogy with words, that is very easy in real life the situation is that
1. by the time you do ecollation of that result whereby the LGTECH must check and validate the result as already snapped (The certified true copy that is the main result)At the backend the difference will be very clear as what you entered will be different from what is in the result sheet.
2. At the ward collation center what is in the SCR will be crosschecked against what is in the physical result sheet.
3. But let us take a situation where a particular political party is in control of a whole ward, at the LGA collation center the same checks can be done.
What of the Party agents at the PU. The example you give is not possible in real life. It’s not possible to change such a huge number where a clear winner has emerged after counting of the ballots which shows that they have supporters in that PU. Any such foul play wil be at the expense of the poll officials life. So you have not manipulated the SCR which is my main point not that an election cannot be rigged, we know that elections can be rigged

garfield1:

If total accredited voters is 300 and total valid votes is 250,what stops him from inputing apc 200 and pdp 50 whereas in the result sheet it was pdp 150 apc 100