Today's problem description: https://adventofcode.com/2019/day/23

Join the Tildes private leaderboard! You can do that on this page, by entering join code 730956-de85ce0c.

Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

<details>
<summary>Part 1</summary>

```python
Your code here.
```

</details>

2020 vision: Where will we be within a decade by Telegraph

The world in 2020: A glimpse into the future by Independent

What will life be like 10 years from now by Eric Zorn

10 predictions for the world in january 1st, 2020 by Paul Buchheit

Feel free to put any more predictions you found or comment on these predictions.

I think that if we aren't allowed to vote on old topics, we shouldn't be allowed to label them either. Not out of any privacy standpoint, but rather from the fact that this way, people can affect ordering of comments even in old topics, which isn't something one would expect to happen. This is potentially confusing, as newcomers to a topic can affect comments even years after.

Today's problem description: https://adventofcode.com/2019/day/22

Join the Tildes private leaderboard! You can do that on this page, by entering join code 730956-de85ce0c.

Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

<details>
<summary>Part 1</summary>

```python
Your code here.
```

</details>

Today's problem description: https://adventofcode.com/2019/day/21

Join the Tildes private leaderboard! You can do that on this page, by entering join code 730956-de85ce0c.

Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

<details>
<summary>Part 1</summary>

```python
Your code here.
```

</details>