diff --git a/doc/source/user_guide/dsintro.rst b/doc/source/user_guide/dsintro.rst index 919dafb291b86..8f12bf2539694 100644 --- a/doc/source/user_guide/dsintro.rst +++ b/doc/source/user_guide/dsintro.rst @@ -16,8 +16,12 @@ objects. To get started, import NumPy and load pandas into your namespace: import numpy as np import pandas as pd -Fundamentally, **data alignment is intrinsic**. The link -between labels and data will not be broken unless done so explicitly by you. +A fundamental feature in pandas is **automatic data alignment**. This means +that pandas keeps your data attached to its labels (the index). When you +perform an operation, like adding two Series (columns), pandas will match them +by their labels, not by their position. The link between data and labels will +not be broken unless you explicitly change them yourself. + We'll give a brief intro to the data structures, then consider all of the broad categories of functionality and methods in separate sections.