Whether in the art world or in the email world, fakes can create big problems. So what about in the tech world of startups and acquisitions? The fortune of a small Swedish biometrics company changed dramatically recently, all thanks to a single document that wasn’t what it said it was. And we take a look at the future of robot coworkers.

Marketplace Tech is at MIT this week to visit the emerging technology conference EmTech. There are serious academics here doing big things. But new innovations and new technology also offer new challenges. Funding that must be found, new parts that must be built and more.

We’re visiting MIT in Boston this week as part of the Emerging Tech conference put on by The MIT Technology Review. One of the buildings we wanted to visit at MIT is the McNair Building. It holds MIT’s Man Vehicle Laboratory. There, Professor Larry Young and his others are working on an important tech innovation. But it’s far from fancy software or the latest startup. It’s a long term mission to protect our brains. Whether you’re on the ski slope, on a bike or headed to Mars.

We’ve been covering news about underground online market Silk Road since federal agents arrested the site’s alleged founder in San Francisco last week. Today there’s a bail hearing for Ross Ulbricht. Authorities say he masterminded the so-called eBay of drugs. Just using Silk Road, though, was a tricky process. Buyers and sellers had to deal in digital currency and use a kind of identity protection software called Tor.

The convoluted world of personal online banking often feels designed squeeze us instead of free us. Simple bills itself as a tech-y solution to many of the problems that plague online banking consumers. Along with no overdraft fees and free checks, the company also promises to help you leverage the bank’s data on your own behavior to help with saving and spending. But can a banking startup actually make us behave differently?

In the ever-expanding world of hacking, there is a dictionary. Not a literal book of words and definitions but a list of phrases you have to know. And one of those phrases is Zero Day. It’s not a day — or a cop thriller with Bruce Willis in it — it’s just a special kind of computer code that can do anything from break into a bank to steal someone’s online identity. And Zero Day exploits are getting more and more popular.

Twitter has made public its papers for an S-1 Initial Public Offering. We’ve got new details on the inner workings of the social network known for brevity. For one, Twitter wants to raise a cool billion dollars when it opens its doors to Wall Street. A nice big number considering the fact that like so many tech companies, Twitter isn’t really profitable yet.

As tech stories go, it doesn’t often get stranger than this. A man known as Dread Pirate Roberts was arrested by the Feds in San Francisco yesterday. His alleged crime? Being the organizer behind Silk Road. A kind of anonymous online black market where everything from illegal drugs to professional hit jobs can be bought and sold.

The website Reddit has grown exponentially in recent years. It now accepts 19 million up or down votes every day on links to everything from celebrity advice to pornography. This weekend, thousands of the website’s users will be going offline to gather in the real world for reddit’s second global day of service.