I have been knitting for 36 years, since I was seven. For 35 of those years, I worked from the outside of the ball inwards, unravelling the ball as I went. My mum tried to convince me to work the other way, from the centre out (her argument was that it kept your yarn clean), but she failed.
Last summer, Kate convinced me to try doing it the other way, working from the centre outwards and, also, to role centre-pull balls. Her logic was unassailable - if you work from the centre outwards, the ball doesn't need space to roll around so I wouldn't need to take my ball of sock yarn out of my small sock-knitting-purse. Fewer chances for it to roll off and get dirty.
Yesterday, I started knitting my latest pair of socks. And was rapidly reminded why I'd given up on centre-ball-outwards knitting 36 years ago:
Two rows in, I tugged on my yarn and hauled out a huge tangle from the centre of the ball. It took 50 rows to knit out. I'm now at the 73rd row and I'm still fighting tangles.
Don't you just hate it when that happens?
PS: It's Opal's Harry Potter sock yarn in the Draco colourway.