The headline should not be an end on its own. It’s a means to get readers interested in the relevant content that follows it.

you should never simultaneously show an animation of the robot on the right side of the screen and a text box on the left.

If we know that readers are likely to look for how their own region fits into the big picture,

makes us better at knowing what to do in other situations, even if they are only loosely related

Data are records of observations.

The more visible the functionality of an object, the easier it will be for users to create a mental model of what they can obtain from it. Norman encourages designers to take advantage of “natural mappings” or

The brain is much better at quickly detecting shade variations than shape differences.

You can design a chart that not only allows comparisons, but also focuses on changes that occurred between the two years.

what you want your readers to compare (the areas) is on the left; what they actually compare (the diameters) is on the right.