There's a problem here as the author himself notes. I can provide you a simple example of a function with monadic interface, you will understand it any langua

There's a problem here as the author himself notes. I can provide you a simple example of a function with monadic interface, you will understand it any language but that will not actually help you to conceptualize the idea of monads and influence your thinking. You will just think that's simple, whats the fuss about it and miss the pattern altogether. Imagine asking the user to provide a number, in most languages you will get a `string | null` value and you wish to get a real number from it by parsing the string if the user entered it. In this case assuming you have a function `parseNo` that goes from `string -> int | null` you can create a special function which takes a `string | null` value along with the `parseNo` function and gives you back `int | null`. S Turns out that function can be defined for many different data types and it has special useful properties. In this case it allows us to compose functions neatly, without having to do a whole bunch of null checks. But in other scenarios it can do a lot more.