"...Unix was a programmer’s delight. Simple, elegant underpinnings.
The user interface was indeed horrible, but in those days, nobody cared about such things.
As far as I know, I was the very first person to complain about it in writing..."

'Foreword' By Donald A. Norman
- 'The UNIX-HATERS Handbook' https://homes.cs.washington.edu/~weise/unix-haters.html