As suggested in the DISQUS comment section, the solution code doesn't follow the order of the initial task question which could make it a bit confusing for people that are just starting out so I've reordered the code lines. The discussion can be found at the bottom of this page: http://javascript.info/types

Task question:

`let name = "Ilya";

alert( hello ${1} ); // ?

alert( hello ${"name"} ); // ?

alert( hello ${name} ); // ?`

Current book solution:

`let name = "Ilya";

// the expression is a number 1
alert( hello ${1} ); // Hello, 1

// the expression is a variable, embed it
alert( hello ${name} ); // Hello, Ilya

// the expression is a string "name"
alert( hello ${"name"} ); // Hello, name`

Correct solution:

`let name = "Ilya";

// the expression is a number 1
alert( hello ${1} ); // Hello, 1

// the expression is a string "name"
alert( hello ${"name"} ); // Hello, name

// the expression is a variable, embed it
alert( hello ${name} ); // Hello, Ilya
`