Tracking
Baselines & variance
A baseline is a frozen snapshot of the schedule at a moment you choose — “this is what we committed to.” The live plan keeps moving; the baseline doesn't, so the gap between them is your slip.
Capturing one
Capture a baseline when a plan is agreed — after kickoff planning, after a re-plan. You can keep several (“BL1 — kickoff”, “BL2 — after rebase”) and choose which one the chart compares against, so you can measure against the commitment that matters for the conversation you're having.
Reading variance
With a baseline active, the chart shows the original dates alongside the live ones. A task that drifted later than its baseline is slipping; earlier is ahead. The point isn't to relitigate every move — it's to see, at a glance, where reality diverged from the plan so you can act on the few that matter.
“My baseline moved with the schedule.”
It shouldn't, and it doesn't — a baseline is a fixed historical record, deliberately not a live reference. If a task's baseline looks like it changed, you're likely viewing a different baseline (or none). Re-pick the one you meant to compare against; capturing a new baseline never rewrites an old one.
Recap
- Is — a frozen copy of the plan at a chosen moment.
- Use — keep several; pick which to measure slip against.
- Never — moves with the live schedule; new captures don't rewrite old.