technical knowledge

"For centuries, hand knitters have used different types of stitches and stitch combinations to specify the geometry and 'stretchiness' of garments, and much of the technical knowledge surrounding knitting has been handed down by word of mouth," said Matsumoto.

Trying to contain it without having the right technical knowledge can just make things worse.

A simple way of comparing the quality of windows on sale is to look at their energy ratings, suggests Brian Horne, technical knowledge lead at the Energy Savings Trust.

The "failed medical student", who dropped his plans to become a doctor and went on to study engineering, has drawn both on his technical knowledge and three years of avid YouTube watching during his illnesses.

Islamic scholars translated and preserved a great deal of both Greek and Indian scholarship that has contributed immensely to the world’s mathematical, scientific and technical knowledge.