After troubleshooting and rebuilding a pc of a customer back then 6 times , reinstalling it , changing all cables , checking every single hardware connector for damages and they were all pristine , no tools showed errors or anything.

Put the ram into another pc to check it , pc did boot fine , checked no errors , put the ram back in the other pc and pc boots , no issues , 7 day long term test no issues at all.

Idk what it was till today , don't forget I had rebuilt the pc multiple times prior the ram just worked after being in another pc , I even took it a few times out and put back to make sure that the clamps are OK and connector and it wasn't just luck nope , worked every single time afterwards.

I was working on a e-commerce site for a large furniture manufacturer. They wanted to add a new attribute to a site that dealt with the fabrics they used. This would have been somewhere near 500 individual products with their own value for this attribute. We had to get this lined up on the product csv because somebody didn't think to do it in the erp. One of my managers was set to go in and use Excel to merge the lists, but I realized he would have to do this every month until the end of time. I wrote a quick script on the site to do this anytime the product csv needed to be updated. Write once, run forever.