So basically, what this means is that sometimes you need one package to work properly before another can function correctly. For example, if you want to install the “festival” speech synthesis software on your computer, it needs some other packages called “alsa-utils” and “libasound2-dev”. These are like its little helpers or sidekicks that make sure everything runs smoothly.

Now, in order for festival to work properly, you need to install all of these dependencies first. This is where dpkg comes in handy! Instead of using the more popular package manager called apt (which handles packages and their dependencies automatically), we’re going to use dpkg to do it manually. Why? Because sometimes things get messed up with apt and you end up with broken packages or dependency errors that can be a real pain to fix.

So let’s say you downloaded the “festival” package from some website (or maybe you got it from a CD-ROM disc) and now you want to install it using dpkg. Here are the steps:

1. Open up your terminal window by pressing Ctrl + Alt + T on your keyboard or searching for “Terminal” in your application menu.
2. Change directories (or navigate) to where you saved the festival package file using the command `cd /path/to/festival`. Replace “/path/to/festival” with the actual location of the downloaded .deb package file on your computer.
3. Run the following dpkg command: `sudo dpkg -i festival_1.79-8ubuntu2_all.deb` (replace “festival_1.79-8ubuntu2_all.deb” with the actual name of your downloaded .deb package file).

This will install the “festival” package using dpkg, but it might encounter dependency errors if some of its little helpers (like alsa-utils and libasound2-dev) are not already installed on your computer. In this case, you can use another dpkg command to fix those issues:

`sudo apt-get install -f`

This will automatically resolve any dependency errors using the more popular package manager called apt (which we skipped earlier). Once everything is fixed and installed correctly, you should be able to run festival without any problems!