Have you ever seen the Ben Stiller and Cameron Diaz movie Theres Something About Mary?

In one scene, Ben Stillers character, Ted, picks up a hitchhiker who considers himself an entrepreneur:

Hitchhiker: You heard of this thing, the 8-Minute Abs?

Ted: Yeah, sure, 8-Minute Abs. Yeah, the exercise video.

Hitchhiker: Yeah, this is going to blow that right out of the water...Listen to this: 7... Minute... Abs.

Ted: Right. Yes. OK, all right. I see where you're going.

The funny thing is, these lines remind me of conversations Ive had with dozens of different technology entrepreneurs.

You see, theres a tendency in the start-up world to focus on incremental innovation. Entrepreneurs believe that their 7-minute product is better than the current 8-minute solution.

But in the world of technology start-ups, unlike in our movie example, these incremental improvements really can unlock value.

One example?

We believe that a small innovation in 3D printing could lead to tremendous gains for the world, and for investors like you.

So say goodbye to 3D printing

And say hello to 4D Printing!

4D printing takes 3D Printing to a new level.

I know, I know were getting into 7-minute abs territory here, but bear with me.

As you might know, 3D printers can print everything from basic objects like cylinders or balls, to more complex objects like handguns.

But regardless of how complex these objects are, theyre static. Meaning, they cant change size, shape or position after theyve been printed.

With 4D Printing, however, they can change...

4D printers can create objects that are dynamic.

Let me explain...

You see, 4D-printed objects are constructed using a new technology known as intelligent materials.

The materials used in a printed object respond to different inputs in different ways. They can respond to pressure, temperature, even substances.

For example, imagine if a water pipe burst in your home...

If the pipe had been printed with 4D technology, it would self-seal when water is applied to its outer coating. The material would automatically expand.

You can see an example of a 4D object changing shape in this video:

http://vimeo.com/59185591

The applications for this technology are endless.

It could print sneakers that change shape depending on whether someone is walking or sprinting. It could print a chair that provides more or less support based on the weight of the person sitting in it. It could even print adaptive body armor for soldiers an outer layer that would change in color or density based on the environment.

The 3D printing era was defined by the printer technology. As various start-ups emerged, they helped push the cost of 3D printers down, thus making them more mainstream. In turn, the industry exploded and investors in those start-ups profited handsomely.

Take New York-based MakerBot, for example. The company was founded in 2009 and helped pioneer low-cost 3D printers for the masses. Ultimately, the company was acquired last year by Stratsys for over $500 million.

But now we believe that, instead of innovating on the printer technology, the most promising companies will innovate on the material technology.

These are the start-ups that will define 4D printing.

In fact, theres a company raising money online, right now, thats pioneering new printing materials.

The name of the company is Made Solid.

Made Solid develops materials for printing applications.

They currently produce three patent-pending materials.

The company is raising $500,000 on AngelList and the round is being led by Y-Combinators Garry Tan. Y-Combinator is a prestigious start-up incubator think of it as an Ivy League for start-ups.

(You can learn more about Made Solid and the deal here.)

Technically, Made Solid isnt a 4D printing company...

At the moment, its focusing on material innovation in 3D printing.

That being said, the company is on the cusp of innovation in the 4D Printing space. Theyll be in a good position to make the shift to 4D ahead of their competitors.

This is a long-term trend thats just getting underway, so we predict that many more start-ups will enter this space.

As the industry gathers steam, were looking to make selective investments. And well share our investment ideas with you as the situation evolves.

Happy Investing!

Best Regards,

Wayne Mulligan

for The Daily Reckoning

Ed. Note: Thousands have benefited from our entry-level research package on 3-D printing, bio-printing, 4-D printing and more. If you want to learn about specific advice on where to invest, or if you simply want to learn about how science fiction is becoming science fact,your best first step is signing up for the FREETomorrow in Review e-letter.