Final answer:
There have been major developments in philosophy from theoretical perspectives, including challenges to the narrow theory of meaning and criticism of an ahistorical understanding of philosophy.
Step-by-step explanation:
From a philosophical perspective, there have been some major developments both in terms of practical questions and conceptual grappling with the nature of meaning itself. In the middle of the 20th century, philosophers began to challenge the narrow theory of meaning proposed by the Logical Positivists, leading to the defense of the rationality of theistic belief and a shift in attitudes towards religion. Additionally, there has been criticism of narrowly reading philosophical texts and an exclusive focus on arguments, which has led to an ahistorical understanding of the development of philosophy.