Avner Cohen provides a great summary of writing history (here under the particular limitations of studying Israel’s nuclear arsenal):
The narrative I offer, then, is by nature incomplete and interpretative. Like all narratives, it is not written from God’s-eye view; rather, it is a story told through incomplete human and archival sources.
Cohen, Avner. “Before the Beginning: The Early History of Israel’s Nuclear Project (1948–1954).” Israel Studies 3.1 (1998): 112-139.