In his report, Sir Jim defines dyslexia as a "learning difficulty which primarily affects skills involved in accurate and fluent word-reading and spelling".

BBC: Teacher training to spot dyslexia

Casio has redesigned the ClassPad series' software keyboard to make this new model easier to use, organizing functions to correspond to three levels of learning difficulty, beginning with basic functions used by everyone like fractions, square roots, and trigonometric functions, then advanced functions like differential calculus, complex compound numbers, and sigma calculations, and finally even more advanced calculations including piecewise and user-defined formulas.

ENGADGET: Casio's touchscreen graphing calculator arrives in 2013, makes the TI-84+ look dated

As for the difficulty of learning about our past, just recognize how incomplete the fossil record really is: The 280 million Americans alive today collectively have some 60 billion bones in their bodies.

FORBES: Fact and Comment

To those who would define better performance in education as "quality learning" or "subject matter difficulty, " this strategy looks doomed to fail.

FORBES: Defining Performance In Disruptive Innovation

However, the theories underpinning software programming were extremely dense, and the difficulty I had with learning and understanding code led to my first moment of realization: perhaps the world of computer science was not for me.

FORBES: 6 Key Traits of Social Changemakers

The difficulty for marketers is creating the right kind of buzz and learning to control it.

ECONOMIST: Marketing: Building buzz | The