Passage:
Dendrochronology, the science of dating wood based on tree-ring growth patterns, has become an indispensable tool in historical architecture. By comparing ring sequences from structural timbers against master chronologies, researchers can pinpoint the exact year a tree was cut down. Consequently, architectural historians often assert that the felling year of the timber directly identifies the year the building was constructed.
Statement:
The claim that a tree's felling year directly identifies a building's construction year depends on the unstated assumption that harvested timber was not typically stored for extended periods prior to its use in construction.
Answer: Answer
Answer
True. The argument relies on the necessary assumption that timber was used promptly after harvesting rather than stored for long periods.
The conclusion directly equates the tree-felling year with the building construction year. For this bridge between premise and conclusion to hold, there cannot be a substantial delay between harvesting the wood and using it. Assuming that timber was not stored for extended periods is therefore logically necessary for the conclusion to stand.
Step-by-Step Solution
Key Concept
Identifying Unstated Assumptions in Passages