rereboy wrote:EDIT: After writing the original text I realized I had read what you wrote wrong

So I deleted the original text. Sorry about that.
However I do not agree at all, reading back, that Goku would use Kaioken to defeat Cold. If he couldn`t beat him in his base form, Goku would just use SSJ. Goku never used Kaioken after becoming SSJ. There are two possible reasons for this:
- the author forgot about kaioken or
- kaioken has only disadvantages compared to SSJ and it can`t be used along with the SSJ.
The second reason is more likely. The kaioken strains the body more than the SSJ (which doesn`t strain at all after being used to it) and gives less power than the SSJ form.
Also we can assume that it can`t be used with the SSJ because Goku never did it again in the series and if he could, it would give him tremendous advantage in battle combining it with SSJ. It could even be enough to allow him to defeat Cell or the androids. Since he didn`t even try we can assume that is not possible.
So its only natural for him to completely substitute Kaioken with the SSJ state in any situation.
Is obvious that kaioh ken dissapeared in the manga series because it was inferior to the SSJ if controlled correctly.
About using kaioh ken combined with the SSJ state, it is impossible, it was said on the manga.
Kaioh ken needs a perfect control of your energy, this is why only goku can use it.
In the SSJ form, even when controlled almost perfectly (full power state), you can't have a control of your energy as big as in the normal state, and this is why is impossible to use kaioh ken while being a SSJ.
SSJ replaces Kaioh ken because when in full power, it doesn't hurt the user's body and it gives you more power than a kaioh ken x20 and because as I said, kaioh ken can only be used in base state, and in the manga series the base state can't improve when it reached its limits, so it has no sense to use kaioh ken in the cell saga because the only way you have to improve is to use stronger levels of kaioh ken (that destroy your body even at higer levels too).
But, that doesn't mean that kaioh ken isn't stronger than a basic SSJ state, like the one that goku or trunks had at the begining of the cell saga.
I'm completely sure that goku had to use kaioh ken in the future timeline in order to defeat cold, because his SSJ form wasn't trained enought to compete against cold in its true form.
wojak wrote:Hey, don't come tell me about virology, I wouldn't add my thoughts into it if I didn't have a clue. I just completed a microbiology/immunology course.
The virus hasn't got a concience, no, but it's got different ways to infect, which could be via the blood, air or touch.
Goku's virus could very well be one that only survives in the blood, in the erythrocytes, and thus, unless when he trained with Piccolo and Gohan they all got cuts and mixed blood, he wouldn't be contagious at all.
So there, you are wrong.
Two things about that:
1st. I think toriyama never studied virology, so we have to have that in mind when talking about that point.
2nd. We don't know the kind of virus that contagied goku. What I think that happens is that the virus isn't deadly for itself if you're in a normal condition, but goku had his body destroyed by the continuous use of kaioh ken, and this was why the virus killed him.
Think about the present timeline, what I think that happens is that the virus infects goku at the same day it does in the future timeline. But in the present timeline, goku has a stronger body (because of what I explained before) that allow him to resist the illnes 2 years.
Regards.