The light changed

What the word covers

Two opposite events under one heading. For distributed work, spatial evidence is only one layer; a team can compare this page with the pilot brief while deciding which operational signals are necessary and which should remain outside the review.

The light went. The room got too dark to work in comfortably, usually late in the afternoon and usually in winter weeks. For broader research beyond this small household record, consult work published by Georgia Tech.

Glare arrived. The sun came round and landed on a surface or a screen, usually late morning or early afternoon.

Fourteen of the twenty-four are glare and ten are darkness. They were not separated on the sheet, which was a mistake and is recorded as one on the method page: they have different hours, different seasons and, plausibly, different remedies.

When they happen

Fourteen of twenty-four fall between nine and one, which is the glare window. The two late ones are both darkness, both in the same home, and both in a week logged in November.

Where they happen

The twenty-four endings are not spread evenly across thirty-one places. Eleven places account for all of them, and four places account for thirteen.

All four are places the households described in terms of a window.

That is the finding, and it is almost tautological: places near windows end sittings because of light. What makes it worth stating is the second half — those same four places have the longest median sittings in the record before eleven in the morning.

The places that fail most often are the places people most want to be, at a different hour of the same day.

A page in the section on the hour works through a single window seat across five days, because that pattern is clearer in one place over a week than in aggregate.

What is not here

No lux readings. No orientation recorded beyond what households volunteered. No season coded, although the logging months are known and the two darkness-heavy weeks are both late in the year.

The record has a household's judgement that the light had changed enough to move them, and nothing more precise. That is a soft measurement, and it is soft in a way that probably varies between people more than most of the other endings do.

The thing a household can do about it

Very little, and this is where the light endings connect to the section on what is fixed.

Orientation was settled when the building was sited. Window size and position were settled by whoever designed it. The path of the sun is not negotiable. What remains is a blind, a curtain, or moving the furniture — and moving the furniture is the only one of the three that any household in this record did during its logging week.

One home moved a place away from a window mid-week. Their light endings fell from four in the first two days to one in the remaining three.

That is five days and one household, and the page on changes treats it with the suspicion a result of that size deserves. It is mentioned here because it is the only direct evidence in the record that anything anybody did affected anything.

Why this cause and not the obvious one

A reader expecting the largest cause in a record about working from home to be noise, or family, or the doorbell, is reading from a different model of the problem — one in which the difficulty is other people.

Other people are in this record. Wanted is fourteen and noise is twelve, twenty-six between them, and that is a little more than light alone.

But the single largest thing that moved anybody in these nine dwellings was the sun, which belongs to nobody and cannot be asked to be quiet.

The two halves, which should have been two fields

Separating glare from darkness after the fact is possible only because households often wrote a few words beside the entry, and those words were not part of the instrument.

Fourteen glare, ten darkness, by that reading. The confidence is moderate: four entries were classified from a single word, and two could plausibly go either way.

The two halves behave differently enough that the merge was a genuine loss:

• Glare sits between nine and one, concentrates on four places, and is the kind of thing a blind addresses.
• Darkness sits after three, concentrates in two homes logging in November, and is the kind of thing a lamp addresses.

A sheet that had asked for the two separately would have cost nothing in completion time and would have produced two clean series instead of one mixed one. It is the single clearest instrument failure in the study and it is the first thing that should change if anybody repeats it.

What the twenty-four do not show

They do not show that these dwellings are badly lit. A record of endings is a record of moments when something became too much, and it contains no information at all about the hours when the light was fine.

Nor do they show that the people in them are unusually sensitive to light. Twenty-four endings across forty-five person-days is one every other day, which is not a dwelling anybody would describe as unworkable.