What is a jurisprudence and what usefulness does it have to a practicing legal professional?

Which is a judge most likely to do when concerned that a defendant will commit another serious crime if released on bail? Can you marry adult step child? What are the laws on putting up posters in a public place? Which amendment gives us protection from not being forced to incriminte ourselves? Are predisposition traits of individuals over taken by socialization? Who won in the Raven Furbert case? Can you ride in a 5th wheel camper in Iowa? Who married their 100 year old uncle? Is interspousal immunity abolished in US? Does a wife of deceased spouse has to pay back property taxes on land purchased with an association assessed prior to marriage? Defese for assault causing bodily injury in Texas? Can you work in the medical field if I have a felon for harassment? When are you allowed to hunt on private land? What if a fight breaks out in a bar whose fault? Where can you find a list of NYCDOT's alternate side street parking regulation's for days suspended? What does a double solid white line in the center of the highway? How many felonies equal a strike? What is the issue year of patent? What kind of job can you get with a criminal justice degree? Why are maps concerning wells exempted from the Freedom of Information Act?