“Estimate for X is 5 hours”. Does this estimate only source code change, or full release process with installation to production?
Speech converted to text contains same ambiguities.
People just like to assume that whole group have matching assumptions. (Which have pros and cons)
Also is that 50 % chance done in 5 hours, or 90 % chance, or a virtual guarantee? Makes a huge difference to planning yet nobody specifies it.
One of those tools being that you capture/summarize the discussion in a public display that everyone can see. You check in with the group with something like "Does this accurately capture what was just discussed/decided?" Everyone has a chance to refine it to meet their understanding and/or we discover that we're not aligned, which engenders more discussion until we are.