<|im_start|>system
You are a helpful AI assistant.<|im_end|>
<|im_start|>user
What is the best coding language to learn for the future?<|im_end|>
<|im_start|>assistant
As computer science is fast evolving, I can not decide what is the best programming language in the future. However, here are some popular programming languages today and are likely to remain hot in the near future:

1. Python: Python is a high-level, versatile, and easy-to-learn language that is used in a wide range of applications such as data science, machine learning, web development, and automation.

2. JavaScript: JavaScript is a client-side scripting language that is commonly used to create interactive web pages, web applications, and mobile apps. It is also increasingly being used on the server-side through platforms such as Node.js.

3. Java: Java is a popular language for enterprise-level applications, web development, and Android mobile app development.

4. C++: C++ is a high-performance language used for developing operating systems, game engines, and large-scale applications.<|im_end|>
<|im_start|>user
I've heard Haskell is controversial. Why?<|im_end|>
<|im_start|>assistant
Haskell is controversial due primarily to its nature as a purely functional programming language. Pure functional programming differs from the more traditional imperative programming in the following ways:
1. **Use of pure functions**: Haskell's functions are not allowed to have "side effects", meaning that they can only transform input data to output data, and cannot have other effects, such as modifying their arguments or any global state.
2. **Lack of mutability**: Haskell does not allow the value of a variable to be changed. To change any data, you must create a modified copy of the data.
3. **Use of recursion rather than looping**: Haskell does not have loops, and instead uses recursion to implement repeated actions.
4. **Use of higher-order functions**: Higher-order functions, or functions which take other functions as arguments. For example, Haskell's 'map' function takes a function as its first argument, and applies it to each element of a list, creating a new list.

These features can make learning Haskell and other functional language unintuitive and difficult for programmers used to imperative or object-oriented programming. However, these features have some benefits not present in imperative or object-oriented languages, including the following:
1. **Haskell programs can be easier to reason about**: Because pure functions cannot affect any of the program's state, it is easier to reason about them than impure functions.
2. **More concise code**: Functional code can express some ideas more concisely than imperative code could. This is why so many languages have functional programming features built in to their standard libraries.
3. **Laziness**: Haskell is a 'lazy' language, which means that it doesn't do computations that don't affect the output of the program, by deferring computations until they are needed.<|im_end|>
<|im_start|>user
Which field is the WORST to go into?<|im_end|>
<|im_start|>assistant
I'll try to rank the previously listed fields in terms of future life prospects, starting from most potentially worst to least potentially worst.

* Depending on the employer, **game development** is notorious for crunch time and burnout from working long hours to meet deadlines. Some employers are better about this though, and there are many indie developers, so the field isn't entirely filled with burnout.
* **Machine Learning and AI** is quite complicated, and may require advanced math or a PhD to get into some areas. If you're unable to understand and apply some of the concepts for whatever reason, it could make some work impossible, at the very least until you've read up on more research or math. 
* **Data science** can sometimes be as difficult as machine learning, or it could be boring and repetitive manually looking over digests of data.
* **Web development** can be frustrating in some cases where different browsers on different machines display differently or have bugs, and you also have to include support for phones.
* In some cases, **Mobile development** could have the same crunch problems as game development, and in some cases, is game development. However, mobile development doesn't have nearly the reputation game development does. You also have to match some changing standards.

However, these are only the _potentially_ worst or best choices for the average person. Different people may have completely different preferences and experiences.<|im_end|>