The above sentence sums up your level of intelligence perfectly.Thick as ****, you're more confident of your result but it will still give you roughly the same answers.
Why would you be "more confident" of sonething that gives you the same answers?
It's a complete oxymoron of a statement.
Why would scientists waste resources trying to use as big a sample as possible, if a larger sample size gives "roughly the same answers" as a smaller one??
I'll give you the absolute perfect example that highlights the stupidity of your statement.
Remember the "comprehensive" trials the vaccine went through? with a tiny and limited sample group?
Those trials failed to pick up side effects such as deadly blood clots and heart inflammation.
When the vaccine was rolled out across a larger sample size (real world) these effects were discovered
The rest of your post is just more utter gibberish.