Jeff Witt:  

pendable, reliable and trustworthy, they like to belong to solid organisations that are reasonable in their ambitions and loyal to their employees. They feel useful when their roles and responsibilities are clearly established and they can monitor their activities and productivity in tangible ways. They tend to be rather modest, traditional and conventional, to like sensible clothing, to be thrifty, careful and wise with both money and possessions. Once they accept a project, they will see it to the end. They manage their time well and are realistic about how much time and resources will be needed. When they purchase something, it is after careful consideration; rarely will they buy something without having a known need or use for it. They may keep possessions for a lifetime and treasure those that were given to them. They tend to have a good memory for specific facts that are necessary in their day-to-day life at work and at home. They accumulate facts and details to orient themselves, relying on repeated experiences that have been proven trustworthy. A fact once experienced may be the product of circumstance and happenstance; it is not in and of itself reliable. When an introverted sensing type hears an idea, they rummage through reams of archived facts to find an experience that provides information for the relevance and realism of an idea. When an introverted sensing type utters, "It's never been done!" they are saying that no information about the relevance or usefulness of the idea is available to them. They tend to shy away from surprises and what is perceived as unnecessary change.rises and what is perceived as unnecessary change.".