It wouldn't.

Once again...

It is in line with Sony's expectations.

The only standard available at the time of this writing that one could compare the first week of sales for the PSP go! would be to compare it to the first week of sales for other hand held gaming devices.
For example:

The original PSP
The Nintendo DS
The Nintendo Gameboy Advance
The Nintendo Gameboy Color
Etc, etc.

Some may claim that, as a new product which lacks the traditional retail channel it would be unfair to compare it to said consoles, but it is the only standard we have to go by for at the moment.
But; it could also be argued that comparing it to the original PSP would be fair as when it debuted it was opening with a new media standard (UMD) to play games/videos.

Also, when more information becomes available we could judge from our POV how bad/well it did according to the expectations of SONY, since we don't have hard numbers to go by at the moment, things to take into account, like : costs of development, costs of manufacture, and profit/loss in sales.

Just saying...

If a 360 slim came and sold like that, I would consider it a flop. However

1) The 360 slim wouldn't nearly be as dramatic of a change.
2) The PSPGo wasn't made to take the place of the 3000 like the 360 would be made to do.
3) The 360 Slim wouldn't rely on complete different methods of distribution.
4) The 360 slim wouldn't release at a higher price.

Overall, I think you're making a weak comparison.

Do people think SAony made the go so thyat it could flop?

They made a product that they thought would sell well and give them a drop in the bucket worth of cash.

It did not sell well, just like madworld and The conduit

A lot of apologists in here. A company doesn't R&D a product and release on the assumption that it is going to be a flop or an experiment. That's just insane; especially given Sony's sketchy finances at this time.

I think they should have encased it in red plastic and called it the Virtual Boy 2.

How much would "sold well" in SONY's mind for the PSPGo???

That's the question no one is asking... 

It flopped like a big floppy thing....it was a stupid idea in the first place, especially raising the price. I haven't even seen the thing in my local shops.

So, where exactly did I say it was a flop? C'mon, surely you must have seen me say it somewhere since I am obviously hellbent on trolling the heck outta the PSP. Here's what  Idon't get...why the heck are you so insecure about the PSPGo? Is saying the PSP Go didn't flop seriously the only thing that will make you feel good about yourself.

According to your definition of my logic, I guess the 360 and PS3 were both flops as well...OMFG I had better ditch my 360! I can't have a console that flopped!!! I mean, my god, The PS3 and the 360 are both held to the standard which IS the Wii, and somehow, neither are considered flops (unless you talk to fanboys). I think the same would be true with the DS Lite and the PSP Go. If you could look past your own insecurity, perhaps you would see this.

Actually electronic companies (and others) regularly test the market with more experimental features - how else do you think new developments arrive?  Sure, they have research that indicates there is some market, but most new stuff starts small.  Sometimes, if the timing is right, it explodes (like the ipod).

Why do you think there are 360 skus with HDD and some without, why do model features change?  Trying to both follow the market and anticipate future trends.

The Go is an experiment, the first gaming device to fully get behind digital channel at the exclusion of physical media.