If the desktop on your Mac gets cluttered with open app windows, you can use Mission Control to create additional desktops, called spaces, to organize the windows. When you work in a space, only the windows that are in that space are shown.

This is a bit of a "holy war" among software developers; one that's been the subject of many debates and in-jokes. I use spaces, but I never thought it was particularly important. But today we're releasing the raw data behind the Stack Overflow 2017 Developer Survey, and some analysis suggests this choice matters more than I expected.


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Analyzing the data leads us to an interesting conclusion. Coders who use spaces for indentation make more money than ones who use tabs, even if they have the same amount of experience:

Indeed, the median developer who uses spaces had a salary of $59,140, while the median tabs developer had a salary of $43,750. (Note that all the results were converted into US dollars from each respondent's currency). Developers who responded "Both" were generally indistinguishable from ones who answered "Tabs": I'll leave them out of many of the remaining analyses.

This is an amusing result, but of course it's not conclusive by itself. When I first discovered this effect, I assumed that it was confounded by a factor such as country or programming language. For example, it's conceivable that developers in low GDP-per-capita countries could be more likely to use tabs, and therefore such developers tend to have lower salaries on average.

As another hypothesis, we know that different types of developers often use different indentation (e.g. with DevOps developers more likely to use spaces and mobile developers more likely to use tabs), often because they use different editors and languages. The Developer Survey asked both about what programming languages each respondent uses (Python, Javascript, etc) and what "type" of developer they are (web developer, embedded developer, etc).

Yes, the effect existed within every subgroup of developers. (This gave a similar result even when filtering for developers only in a specific country, or for ones with a specific range of experience). Note that respondents could select multiple languages, so each of these groups are overlapping to some degree.

I did several other visual examinations of possible confounding factors (such as level of education or company size), and found basically the same results: spaces beat tabs within every group. Now that the raw data is available, I encourage other statisticians to check other confounders themselves.

The model estimated that using spaces instead of tabs is associated with an 8.6% higher salary (confidence interval (6%, 10.4%), p-value < 10^-10). (By predicting the logarithm of the salary, we were able to estimate the % change each factor contributed to a salary rather than the dollar amount). Put another way, using spaces instead of tabs is associated with as high a salary difference as an extra 2.4 years of experience.

So... this is certainly a surprising result, one that I didn't expect to find when I started exploring the data. And it is impressively robust even when controlling for many confounding factors. As an exercise I tried controlling for many other confounding factors within the survey data beyond those mentioned here, but it was difficult to make the effect shrink and basically impossible to make it disappear.

Correlation is not causation, and we can never be sure that we've controlled for all the confounding factors present in a dataset, or indeed that the confounders were measured in the survey at all. If you're a data scientist, statistician, or analyst, I encourage you to download the raw survey data and examine it for yourself. You can find the code behind this blog post here if you'd like to reproduce the analysis. In any case we'd be interested in hearing hypotheses about this relationship.

Valuing and protecting spaces for people of color (PoC) is not just a kind thing that white people can do to help us feel better; supporting these spaces is crucial to the resistance of oppression. When people of color are together, there can be healing. We can reclaim parts of ourselves that have been repressed. We can redefine ourselves and support one another in embracing who we are. The necessity of these spaces is obvious to me as a woman of color learning to embrace layers of my own identity by being in community with other Black and brown bodies.1 This has been especially important in my spiritual community, Shambhala Buddhism, where we are taught that surfacing vulnerability is the path to creating a more fair and just society. Yet, in my own organizing of a PoC meditation in Oakland and in conversations with other people of color in my sangha across the United States, I have been angered and baffled by the responses of white people to these spaces.

This article is being written in service of helping to clarify confusion about the value of PoC spaces. I do this by answering some of the questions that I and other PoC have received when organizing these spaces.

I value the efforts of those consciously working to challenge the dynamics of our social conditioning by considering the conversational architecture in groups, inviting myriad forms of knowing and creating opportunities for PoC leaders. I believe these efforts are essential for addressing the inequities in our society and necessary before inviting people of color in the door, but they do not replace the need for PoC-only spaces.

What are the causes and conditions that allow for organically populated integrated spaces? With gentleness and precision, white people must do the work of looking at the delusions of ego (a shared social conditioning) that encourages them to succeed at the expense of everyone else.

I believe that in most circumstances, doing race work in an integrated setting is harmful. This is not a popular belief, especially among white people. I have been challenged on this time and again, and I keep showing up for these conversations in mixed-race settings and breaking down from the pain of it all. I open myself up to stories about racist family members, or admissions from former white supremacists. Why do I need to hear this? The fact that racism exists is not a surprise to me. That it infiltrates my very own community is obvious. I do not need to hear more stories about it. Are these admonitions made in hopes of atonement? It is not mine to give.

We live in a world where if we are unconscious about who is not in the room, we will inevitably create a society that privileges white, affluent men and disadvantages everyone else. This is the society we have now.12

Kelsey Blackwell is a somatic coach, writer and facilitator committed to fearlessly creating spaces for women and PoC to trust and follow the wisdom of their own bodies so they may powerfully shine their lights in a world that sorely needs this brilliance. Follow her at kelseyblackwell.com.

The Arrow Journal is dedicated to providing thoughtful investigation of contemplative wisdom and pressing global challenges, featuring stories and analysis from diverse authors. Your support has the power to keep The Arrow growing and accessible.

The Arrow explores the relationship among contemplative practice, politics, and activism. We foster dialogue on the applications of contemplative wisdom to pressing social, political, and environmental challenges.

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Confined spaces - such as manholes, crawl spaces, and tanks - are not designed for continuous occupancy and are difficult to exit in the event of an emergency. People working in confined spaces face life-threatening hazards including toxic substances, electrocutions, explosions, and asphyxiation.

This webpage contains information on the new regulation, compliance assistance documents, and other resources OSHA has to help employers and workers understand the rule. OSHA will continue to publish new guidance products in the coming months, and will post them here. Please check the website often for updates.

Construction workers often perform tasks in confined spaces - work areas that (1) are large enough for an employee to enter, (2) have limited means of entry or exit, and (3) are not designed for continuous occupancy. These spaces can present physical and atmospheric hazards that can be prevented if addressed prior to entering the space to perform work. This page is a starting point for finding information about these spaces, the hazards they may present, and ways to safely work in them.

You can use spaces in Google Chat to get everyone in the same place to discuss a topic or team project. These spaces can be managed by an admin or the creator of the space. Members can follow conversation threads, collaborate on documents, and arrange for meetings all in the space.


The Occupational Safety & Health Administration (OSHA) Confined Spaces Advisor provides guidance to help employers protect workers from the hazards of entry into permit-required confined spaces. The Advisor will help you determine if a space is covered by OSHA's Permit-Required Confined Spaces regulation. The system provides options to review the definitions of technical terms, to review answers to frequently asked questions, and to review the regulatory text.

The OSHA Confined Spaces Advisor is one of a series of elaws (Employment Laws Assistance for Workers and Small Businesses) Advisors developed by the U.S. Department of Labor (DOL) to help employers and employees understand their rights and responsibilities under Federal employment laws. To view the entire list of elaws Advisors please visit the elaws website. To learn more about DOL's efforts to ensure safe and healthful working conditions for America's workers, visit the OSHA website. 152ee80cbc

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