Dr. James Hamblin writes in The Atlantic that apple cores are a myth - a ghost - a product of society that never really existed. This was prompted by a video called "How to Eat Apples Like a Boss" by Foodbeast where Elie Ayrouth ate an entire apple from bottom to top, then finished with a wink to the camera - like a boss.
I haven't met anyone who thinks this way of eating an apple is "normal". I've seen a lot of chatter online that suggests most people won't switch to this "new" way of eating an apple. There are benefits, but they're not obvious - because it means not throwing out an apple core. Reducing waste apparently is not a significant enough benefit to overcome this ingrained way of doing things.
Everyone has ingrained way of doing things. Sometimes those ways are beneficial. Sometimes they're not, but because they're "just the way we do things", we don't necessarily think about them. We just do what we've been doing out of habit, oblivious to the potential under our noses.
A shift in your perspective can make a huge difference. If you have an ingrained perspective on something, perhaps it's worth taking a fresh look at why you think the way you do. If you can eliminate the core of an apple just by looking at it from a different angle, imagine what you could do for your self and your business by examining and adjusting your perspectives.