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If you made it this far into the course, I want to first say congratulations in module one, you learn

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to solve problems using code, and so far in Module two, you learn to write high quality code.

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The last section concurrency is not about writing code and building projects, it's more about preparing

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you for the future.

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In other words, this section is not a definitive guide on low level multithreading.

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This section is going to teach you the core concepts of multithreading to prepare you for the future.

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What do I mean by that?

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Well, I know that most of you after this course are going to pursue Android development or even web

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development with spring boot or whatever type of app development you decide to pursue.

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You're going to hear these phrases a lot.

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A task is blocking the main thread.

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The task needs to run on another thread, executing tasks in serial fashion, executing tasks concurrently,

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and this code is vulnerable to race conditions and so many more performance related phrases that by

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the end of the section, I know that you're going to fully grasp.

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I designed this section so that as you start developing real world applications, you'll know exactly

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what these fundamental concepts mean when you come across them.

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So, yeah, this section is not a definitive guide on low level multithreading, which I personally

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find kind of useless when you're building apps because there are so many frameworks APIs that you can

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leverage to do all the heavy lifting.

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Nonetheless, you still have to understand the core concepts of multi-threading so that you know what's

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going on behind the scenes.

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I really hope you enjoy this section because I guarantee you it's full of so many eureka moments where

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things just come full circle.

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OK, I'll see you in there.