Why do most car radios have 6 preset buttons?

When looking at modern car radios, it’s obvious that the vast majority of these has 6 buttons for pre-set radio stations.
Why?
Why not less, why not more?
It was very tempting to add the tag radio-buttons to this questio…
What is the best way to design layout a screen on a tablet that’s supposed to only show two button?

I know that the simple answer will be just add two buttons on the screen and I’m good to go. But I just feel that it’s awkward to just put two button on the center of a big screen, especially because the screens that follows …
Readable web font weights for blogs

I have a dilemma. Which would be an ideal weight for long text or blog articles? Should it be light, roman or regular? Which is easier to read?
I currently using “Neuzeit Grotesk Regular” on my current website. Would “Neuzei…
Guidlines for UX teams working from a use case document

I am trying to resolve an issue here:
The business analyst team here are adamant that the use case document that they write (including some wireframes that they’ve done) should be used as a template guide for the UX team – …
Guidlines for UX teams working from a use case document

I am trying to resolve an issue here:
The business analyst team here are adamant that the use case document that they write (including some wireframes that they’ve done) should be used as a template guide for the UX team – …
What is considered best practice for using color in website text?

I’m in charge of a website that looks more or less like this:
It needs some work, but I’m mostly worried about defending one aspect of the design: keeping the text black or at least grayscale. My main argument for this is…
which way is the best to present data based on depth

I am working on an application that presents data against depth (which starts from 0 or some negative value) and as we go deeper, newer data is captured which corresponds to a larger negative distance from where the first dat…
Do redundant links help with hidden navigation on mobile?

Our designs tend to use the standard hamburger navigation for mobile sites (although I’m going to push to move into some alternatives in the future).
I’m aware that hidden navigation results in worse overall metrics, so the …
Prioritizing a list/table row

I have a table structure where each row is an item,now my use case involves prioritizing it based on certain parameters such that item with highest priority would come at the top.
I will have a large number of such items (aro…
Taking a user to an editable details view when clicking on the item (in it’s list) while in edit mode? (iOS)

I have a list of items in an iOS app. When clicking an item you are taken to a read only mode with information. The details disclosure arrow is shown on the items.
Now I need to provide a mode where this information can be e…