Perhaps this was covered in the talk and not the slides, but here it goes. I think one of the paramount things about UX that people forget is designing for you

Perhaps this was covered in the talk and not the slides, but here it goes. I think one of the paramount things about UX that people forget is designing for your audience. If you are fortunate enough to have a grasp on the types of users your product has, use that knowledge! For example, the whole sunday vs monday as the first day of the week is not universal. This pattern should be applied regionally whenever possible. Another example, one of my projects in particular used spinners pretty excessively. It was a small on-site user base, so I just watched them interact with the various inputs. I found that inputs that were simply integer based, and less than 4 digits, spinners were great. For consistent sequences, dropdown lists were the key. Anything else was a simple input field. All of these, of course, required input sanitation. But, if I would not apply those assumptions to a new project. If you can try to get an understanding of your users before you design.