A friend has a deep cut on their arm. After a few days of caring for the cut, your friend says they are not feeling well and shows you red lines starting at the cut and progressing up their arm. Your friend asks your advice on what to do next. You should tell your friend to:

Call your doctor and immediately go to the ER

Remain calm and call the local doctor to move him to the ER, in order to remove any risk of advanced infection

(Also, do not care to your friends wound, unless you know what you are doing... actually wait till you get a degree in medicine)

Agroup of engineering students from purdue university reported that its licking machine, modeled after a human tongue, took an average of 364 licks to get to the center of a tootsie pop. twenty of the group's volunteers assumed the licking challenge-unassisted by machinery-and averaged 252 licks each to the center.