One of my (several) angry rants is about people of all ages who refer to “us” and “them”—them being older people. Excuse me but all of us are “we”. Old people are not a separate species. Humans of all ages have huge variability and when one assumes that people over 65, or whichever milepost you choose, have commonalities, you are bound to be wrong.
In fact, the longer we live, the greater the variability. Babies have age-specific markers. It is somewhat predictable at what age babies begin to walk and talk. But the longer a human lives, the greater the variability. Even by the teen years, people are more unpredictable. Any time one generalizes about all old people, one is bound to be wrong.
This “us” and “them” is particularly obnoxious in people working with older people. Just as racism and sexism foster unfair stereotypes and injustices, ageism does too.