None of the suggested alternatives so far are the same as Sunrise's meet feature-- including vyte, Microsoft Invite, Google's Appointment Slots, or calendly.
Meet allows you (the requester) to set the times available for meeting and send a signup page to a single respondent.
It's not about group meetings, or about "office hours" that anyone can sign up for.
The use case is surprisingly broad: a small window of availability for a single meeting.
It's odd that this is missing. Without it, it's not possible to analyze for biases w.r.t. the stimuli used or even the perceptual features they're adjusting.
Like many others, I just filed a support ticket as well. I'd like one of two outcomes: 1. A public response and plan from Schwab, or 2. An alternative bank/brokerage company that a) takes security seriously and b) is easy to move to.
You're absolutely right. Everyone harps on pie charts for being awful for element-to-element comparisons. This mainly stems from Tufte's work and experiments from Cleveland and McGill.
However, in part-to-whole relationship tasks, pie charts can outperform bar charts, since in bar charts there is no true "whole".
Lane (first author) here -- happy to take questions on behalf of the co-authors.
xangg already pointed out the nice followup from Matthew Kay and Jeff Heer (https://idl.cs.washington.edu/files/2015-BeyondWebersLaw-Inf...). I'll also direct folks to Ron Rensink's original paper and his several followup papers targeting the underlying mechanisms of correlation perception (https://scholar.google.com/citations?hl=en&user=s_5xXxQXpU0C...)