If I think about it objectively, I need to understand why a white gi was / has been worn.
Okayā¦ really, when it comes down to it, the answer is always purely down to the individual system and it's decision making process itselfā¦ the reasons for one art/system using a white gi (or dobok, or anything else) are entirely their own. Soā¦ look into the particular art itself. Other arts reasons aren't particularly relevant.
It is only after understanding this can it be decided what one will do.
Erā¦
Also, if we call it simply tradition, why still bow? Why still use "traditional" weapons? Why train in a dojo (dojang)?
Again, the reasons are entirely centred around the system itselfā¦ one arts usage of "traditional weapons" will be different to anothersā¦ even in regard to the reasoning for it. Some will keep bowing as an anachronistic holdover from a misunderstood cultural trapping, others will have much more intimate meaning attributed, and so on. As far as a dojo/dojang, well, look to the wordā¦ it's not a specific place, and has a similar meaning to asking why people work out in a "gym"ā¦
What criteria are used to decide if a "tradition" is still useful?
That's simply too vague a question, and covers too broad a range of both actual traditional methods and aspects and what I would generously call "pseudo-traditional" aspectsā¦ I meanā¦ first you'd have to define the tradition itselfā¦ then you'd have to look at it in the context of the system you're thinking ofā¦ then look to that systems reasons for maintaining itā¦ then decide if that consists of relevant criteria. Then you'd have to do it again with another traditionā¦ another context (in the same, or a different art)ā¦ and so onā¦
Never been a standard for anything?
Not a universal one, no.
Is there or has there been curriculum?
Not a universal one, no.
Not a univerā¦ you know, you probably know where I'm headed with this. Hell, even the simple format of what a kata is, and how it's applied within the art in question, isn't anything that could be described "universal" or even "standard".
There is not really a universal standard in "modern" / "traditional" martial arts, that I will agree with, but it all came from some standard somewhere.
No it didn't.
First of all, there has been a standard in martial circles since the beginning...breathing at the end of a battle is better than no longer breathing at the end of the battle...and everything has evolved from there.
That's a highly simplified (and, honestly, not overly accurate) assessment of the aim of a combative encounter from a personal standpointā¦ but it's not a "standard", and doesn't actually have much to do with martial arts, let alone there being a "universal standard" for them "since the beginning"ā¦
The belts are absolutely a new invention,
Really? Belts didn't exist until Kano created the first one? Oh, you mean the application of belts as an outwardly displayed indication of rank, yeah? In that case, I'd ask you to define "new"ā¦ as the vast majority of arts taught and trained today are all younger than the advent of belt ranking, which has been around for over 130 years nowā¦ with additions coming from about 80 years ago onwardsā¦
and the gi is used in a new way,
The giā¦ being about as old as the belt ranking system itselfā¦ is being used in a "new" way? New compared to what?
but the gi has always been there...at least for the warrior class.
Erā¦ I know I've asked this before, but exactly where are you getting this "information"?
In other words, no. Not at all. If you're going to reference a "warrior class", based on your other posts, you're most likely (erroneously) referring to the bushi class of Japan (small note: this is in the TKD sectionā¦ so not overtly relevant hereā¦), in which case I might point out that, while there was a form of "under-kimono" worn, that's not the origin of the giā¦ it is more realistically based on a form of hard-wearing, simple work clothes called samueā¦ which is far more a peasant/farmer dress than a "warrior" one. So you know, some koryu systems (particularly sword systems) train in such "uniforms" todayā¦ wearing hakama for public demonstrations and so onā¦ others wear keikogi and hakama for bothā¦ I even know of some systems where it's not uncommon to see practitioners train in jeans and t-shirts, or even business suitsā¦
The difference is that training was never really done in the gi by itself. It was not the unifrom.
Well, the gi itself didn't really exist then, so yeah, it was hardly a "uniform"ā¦ but, by the same token, the idea of a uniform in the first place is very much a modern thing as wellā¦
Well, yeahā¦ you may want to pay attention to the sub forum the topic is being posted inā¦
The gi as it is, sure it has evolved, but the wearing of a gi-type garment was always there...but why white?
Erā¦ no, the wearing of a "gi-type garment" was not "always there"ā¦ nor is white in any way part of the equation. Why are Judo-gi and most karate-gi white? Because that's what they choseā¦ realistically, though, if we go back to their origins, you might find that they weren't actually "white"ā¦ more "unbleached"ā¦ which made them cheaper to make (and replace), which is ideal for something that can get roughed up and damaged in regular usageā¦ as well as not having a dye (or bleach) weakening the fibres for the same reasonā¦
Is there a reason why they wore white undergarments into battle, which is what the gi really is, white undergarments.
First off, no, the gi is not "white undergarments"ā¦ secondly, there were any number of colours for the under-kimono (a shitagi, a form of light under-shirt, was most commonly white, but that wasn't universal at all, and depended, as today, on the fashions of the day itself). Thirdly, when heading into battle, a samurai (keeping with the idea that that's what you think you're talking about) would wear what's called a yoroi-hitatare under his armourā¦ which was rarely white, more commonly unbleached, or coloured to match the armour itself (depending on the wealth of the samurai themselves). In fact, no historical, or historically based forms I've ever seen are white.