Takeaway from Adam Piotrowski's story about interviewing a 'senior Ruby tech lead' candidate with three years of solo-project experience who had been promoted because her previous well-known Polish Ruby employer titled anyone who 'managed a project' as senior — letting them bill clients twice as much. Adam accepts that seniority is useful business shorthand for rate and delivery confidence, but argues developers among themselves should be more precise: seniority is area-specific (he calls people seniors who have zero experience with event sourcing or Rails Event Store). The fuzzy definition is 'a big problem of our industry right now'.