Personally, it doesn't need one to me. Also this page from "Grammar Monster" supports me ( http://www.grammar-monster.com/...njunctions.htm ), but only in this instance due the shortness of the clauses, whereas I don't tend to care about length and will often omit commas from certain tightly joined ideas. This is how I use and write the language in my life. Especially in a sentence such as there where the speaker will often give little to no pause.

Here is another page to support my non-use of comma here: http://english.stackexchange.co...niting-the-two Again, this was due to shortness (and straight-forwardness), or if length is what allows my choice, no doubt I break "the rules" on longer sentences often.

When researching this I see that it only ever requires this comma in cases where the two clauses are independent (could stand alone), so "I did my homework and my mom went to the store" would require a comma but "The president gave a very long speech to the conference attendees and has notified the department of his intentions." doesn't require a comma simply because the subject (the president) is shared among the two clauses. This is a ~prime~ example of a rule that to me reeks of arbitrary, and I highly doubt your ~average~ native English speaker adheres to, er even knows, these "rules".

While I'm tempted to just "conform", the video that introduced me to Tatoeba highlighted language as it's used, varying from individual to individual, as an integral part. For now I'm not going to change it. The sentence is so colloquial it does not call for or deserve adherence to formal grammar "rules".

If this becomes a huge point of contention with many people, then I may consider changing it to suit the community, unless many people support the sentence as well. So if you read all this comment whoever you are, feel free to say you support, object to, or have no stance on, this sentence as it relates to a comma ;)

And thanks for the input CK! It's always nice to have another pair of eyes on things, and get a chance to toss around these ideas =)

Also, I just want to mention that all those commas would probably be left out by most of us when writing to a friend, no matter which language it was written in. Tatoeba -- the language as it is really used.

@chajadan

Many thanks for your research and comments on the use (or non use) of the comma, one of the trickiest parts of the English language!
☺

I'm very glad you've added one.

When I say this sentence, "weird but it's true" has the same rhythm as the "phosphoryla" in phosphorylation. Even moreso if we've already established that it's weird, but in general I'm somewhat of a fast talker.

Also, my personal comma style is dictated by a lot of things, but a sense of rhythm is the dominant one, by far.

@patgfisher -- thanks for the thumbs up =)