Why is the source code file so small...

Look at the Half-Life SDK and its about 75mb and thats not the entire source-code and its also compressed.

This don't know wether its
A: Its just Half-Life
or
B: Its a virus thats not really the source-code

the half life engine can fit on a floppy disk

rofl

oh thats funny

"WE HAVE LEET ENGINE!#!@ IT FITS ON FLOPPY DISK!@!@"

the hl engine compiled is 920 kilobytes I think... so yeah.. the source wouldn't be big either :D
I dunno wtf is in the SDK.

The HL SDK comes with extra tools and programmes and general crap for making mods and other stuff like that I thought?

I think the HL SDK also comes with models and textures for all the characters in the game. I know it looks like Valve suck, but I think it is just extra media.

There's a difference between source-code and SDK's I think...

SDK stands for Software Developers Kit i believe...so there's more in there than a source code kiddies

sif that wasn't joo Power..!

and what makes you think that aren't i smart enough to know that koopz!

sdk, preety obvious what it stands for

exactly

that and i figured it out when i had to get the java sdk for uni :)