This isn't a school question but ill answer it anyway, he walked off the field because he took the coach saying leave personally.
This is probably because scientific journals get cross-referenced and peer-reviewed by other mainstream scientific organizations whereas a regular webpage can tell you just about anything without anything to back it up. Their credibility isn't as high.
A persons record has alot to do with it. They normally consider the severity of the crime and the circumstances surrounding it. Some crimes put a person ineligible for bail. A persons record is another consideration. Someone who has a long record may be subject to bigger bail amounts, if any at all. Another thing, if a problematic person has tendencies for being late to court, or not showing up at all. Judges have been know to look at a persons family life and employment status. A persons reputation can really count. I hope this has given you enough information.
A. thats not really essential