If there is one thing in the World that really wakes me up in the middle of the night is planned obsolescence.

I'm talking about when you buy a blender for example, and it brakes up a day after the warranty. 

The World can survive if it gets rid of this practice. It is true that to some extent, overproducing goods do generate new working opportunities. But it abuses the natural resources to such an extent that our grandsons will be plunged into war fighting for the scrapes left.

It really does something that I consider completely unacceptable. People no longer perfect their products. Isn't it a lot more cool for a lamp to last a century than two years? Doesn't that make the engineer a lot more proud?

Sorry, I got carried away in this.

The idea is a business model that focus on offering solutions, not products. 

Let's give an example. I shave myself every other day. So I buy a razor blade that lasts for about a year, and a packaging of two blades every two months. The blades cost roughly as much as the razor blade [something quite mysterious]. 

Shaving for me is not a sport. I just get it done and get on with life. Most of the time I dread doing it. So I'm really all that interested in the shaving solution. I don't care if my razor blade has airplane aerodynamics.

This is the essence of the idea. There are products in life we don't really care about. 

A company approaches me and offers: I'll sell you a shaving solution, a razor blade and periodical blade refils.  When your blade brakes down, I'll send you a new one. There will be certain conditions such as you'll pay extra if you ask them before some time. You will pay a monthly subscription. I'll work, in my factory, to make a blade that lasts the longest, because now it is my interest to do so. 

Of course the numbers need to tailored to make this work. The subscription price needs to return a profit equivalent to what companies earn today with obsolescence. But it would make a world of difference to the environment and to our future.

A few days ago, I stepped on a puddle that was over concrete, it was all green and mossy, and almost fell down. It was the most slippery thing I've ever seen.

Aside from the embarrassment, it left me puzzled. Why was that so slippery? What is the friction coefficient there? Is it the thing or is it slippery because of some substance?

The idea here is to Research that, and find out if you can make a lubricant out of it.

This may already exist.

In an intersection, when you are driving, you have to wait until the traffic light cycles.

What if the intersections had presence sensors that would tell if a car is waiting, and skip a cycle if noone is waiting?

Would it be too costly? What would be the implications in the overall traffic patterns?

It really comes down to this: If you have anything, a group, a project, a country, and people are not well intentioned, things won't work.

This is a study into what leads people to not be well intentioned. Does it has to be something with their ethics? Are people born to be non-cooperative? From this, you try to devise ways to sort people into well intentioned or not. This may require a continuous evaluation.

This is not different from what I see in projects like Wikipedia or Stack Exchange. You are punished, somehow, by failing to be well intentioned. They have not been entirely successfull in making those communities atoxic, how does those two things relate to each other? 

We try our best, after all, to surround ourselves with well intentioned people in life.

Well, that is the idea.

This exists to some extent.

This would be a website to tell you if the price for a product or service is fair. 

It is simple, a place where people can tell how much they paid and make statistics of it. I am not sure if it would be good if the person told where he adquired that product or service.

The big problem in this is that products or services have many conditions associated with them. Sometimes there are 5 different types of RAM memory capacities, or each color has a price, or in even worse cases, painting an appartment depends on how many square meters does the appartment has. In this case, these details would need to go in. 

A variant of this idea is to do this, collect the prices, and allow the user to make a purchase list. The website would then generate a list that minimizes the cost of the purchase, with the client visiting say 2 or 3 stores. Implied in this is that products need to be specified exactly.