EVERY barrel…
Apple computer- phone?
Barrel- on gun or weapon? of oil?
Core- center of Apple, foundational part of something or Definition b : the place in a nuclear reactor where fission (see FISSION entry 1 sense 3) occurs
“Every barrel has a bad apple.
But, in this case, bad apples do not spoil the bunch.
The core is what counts.
The SWAMP is EVERYWHERE.”
Q
https://www.merriam-webster.com/dictionary/barrel
https://www.merriam-webster.com/dictionary/core