I'd expand on 'relying on layering' as 'trading off hand movement for added complexity'. I use a smaller layout without a number row. I noticed that when I had

I'd expand on 'relying on layering' as 'trading off hand movement for added complexity'. I use a smaller layout without a number row. I noticed that when I had to use my laptop's keyboard, pressing the ` key was quite annoying since it required either reaching/moving my hand; whereas on a reduced layout, I found it more convenient to not have to move my hand.