Is grafting science?

Hi.

Any botanists here? I posted on the "Pets and Gardening" board my idea about shortening my indoor potted yucca by cutting out a section of the stem and grafting the rest back together. No response. It's only been a day, but if any botanists know grafting, I'd appreciate any input on things like whether my plan would work and if it might, whether to cut a flat cross-section or an angular cut, and other hows-to, and so on.

"Taming the too-tall yucca" is the subject line in "Pets and Gardening."

Thanks.

-Sal