Usefulness

When you are inventing or creating something most of the time it has to be useful. If not then what’s the point. Of course there are exemptions like Art here you are creating pieces work that could focus on aesthetics meaning it could be beautiful or not most of the time it doesn’t serve a purpose.

So when you are creating something keep in mind what you think will be useful.

On the other hand sometimes if you have a problem then you could find a useful solution. For example if it rains you don’t want people to enter your front door because they may bring in dirt and grim therefore you could use a door mat here they can swipe their feet and also stops them from slipping.

Another example is Two-Factor Authentication here if you go to a website you will need to login with your email and password for example from there the website will send you a code via email or to your smart phone then you would enter that code on the website to gain entry.