Christopher Nolan’s personal take on smartphones is surprisingly practical


Christopher Nolan has spent his career embracing cutting-edge filmmaking technology while resisting one of the most common gadgets on the planet: the smartphone. The Oscar-winning director behind Oppenheimer, Inception, and the upcoming The Odyssey says his decision isn’t about rejecting technology altogether. It’s about protecting something he believes has become increasingly rare – time to think.

In an interview with The Telegraph ahead of the premiere of The Odyssey, Nolan explained that he still doesn’t own a smartphone, despite living in a world where QR codes, digital tickets, and messaging apps have become everyday necessities. His reasoning, however, is far more practical than philosophical.

Rather than fearing the technology itself, Nolan believes smartphones would consume the quiet moments that fuel his creativity. Those idle minutes while waiting for a train, sitting in an airport lounge, or arriving early for dinner are where many people instinctively reach for their phones. Nolan says that’s when he solves problems, develops scenes, and figures out the next step in a film. The Telegraph first reported his comments.

Nolan doesn’t hate technology – he just refuses to let it interrupt his thinking

Given Nolan’s reputation for championing practical filmmaking, many assume he’s anti-technology. The reality is far more nuanced. His latest film, The Odyssey, makes extensive use of visual effects alongside large-scale practical filmmaking, animatronics, puppetry, and in-camera techniques. Nolan has consistently argued that technology should support storytelling rather than replace it, a philosophy that’s evident throughout his work. During the interview, he also spoke about the industry’s growing fascination with generative AI, suggesting younger audiences have been surprisingly quick to reject what he described as obvious “AI slop.” According to Nolan, his own children immediately recognize low-quality AI-generated content because they grew up immersed in online culture.

That perspective extends beyond filmmaking. Nolan admits he deliberately avoids smartphones because he knows he’d become “horribly addicted” to endlessly looking things up. Instead of constantly consuming information, he prefers letting ideas develop naturally during moments of downtime. Ironically, he says the only technology that’s genuinely tested his resolve is the widespread return of QR codes since the pandemic, which has made life without a smartphone increasingly inconvenient.

A filmmaker who still values undistracted experiences

Nolan’s approach also shapes how he believes audiences should experience movies. He praised filmmaker Quentin Tarantino’s Vista Theatre in Los Angeles, where visitors are expected to leave the auditorium if they need to check their phones or smartwatches. Nolan called it a “wonderful rule,” adding that the cinema even pipes the movie’s audio into the restrooms so viewers don’t miss important scenes while stepping out.

His comments arrive at a time when smartphones dominate nearly every idle moment of modern life. Studies have repeatedly linked excessive phone use with reduced attention spans and increased digital distraction, while growing movements advocating “digital detoxes” continue to gain traction. Nolan’s stance isn’t that smartphones are inherently harmful – he simply believes they’re too effective at capturing our attention.

That philosophy also explains why he rarely responds to online rumours or social media speculation surrounding his films. Without a smartphone constantly demanding his attention, Nolan says he’s content letting the noise pass while focusing on the work itself.

For someone celebrated for making films about memory, time, and perception, perhaps Christopher Nolan’s biggest productivity hack shouldn’t be a new app or AI assistant. It’s protecting the empty moments most of us stopped noticing years ago.



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Microsoft Excel handles temporal data effectively if you know which formulas to use. The problem is that Excel includes over 20 date and time functions, but most people only ever need a small core set to build powerful, self-updating workflows. These essential date functions turn messy timelines into automated systems you can actually rely on.

All examples in this guide use an Excel table (Ctrl+T) named ProjectTracker (pictured below). To follow along, download a free copy of the Excel workbook containing this table. After you click the link, you’ll find the download button in the top-right corner of your screen.

A structured Excel tracking table containing project tasks, start dates, and due dates.

Excel views your calendar as a massive string of numbers

The secret logic behind spreadsheet dates

Excel stores dates as serial numbers—starting at January 1, 1900—and displays them using date formats. For example, June 1, 2026 is stored internally as 46174. This allows you to perform arithmetic on dates, such as adding 7 to move forward one week.

Excel intentionally treats 1900 as a leap year for compatibility with older spreadsheet systems. This is not historically accurate, but it rarely affects modern workflows unless you’re working with very old date ranges.

Keep your timelines moving with real-time tracking

Creating a live project countdown with TODAY

If you currently update a “Today” cell manually each morning to keep deadlines accurate, Excel can replace that workflow with a dynamic function that always returns the current date.

To create a live countdown that updates automatically as time passes, add a new column with the following name, formula, and formatting:

Column Name

Days Remaining

Formula

=[@[Due Date]]-TODAY()

Number Format

General

When you press Enter, Excel may automatically format the result as a date instead of a number. That’s why you must select the table column and set the format to General in the Number group of the Home tab.

Each task displays the number of days remaining until its due date, with negative values indicating tasks that are already overdue.

The next time you open the workbook, the calculations will refresh and automatically update based on the new day.

Isolate specific time frames by breaking dates into pieces

Structuring reports with MONTH, YEAR, and WEEKDAY

When working with project schedules, full date values like 2026-07-24 are often too detailed for analysis. You may need to group tasks by month, summarize yearly progress, or identify scheduling issues like weekend start dates.

To extract the month, delete the Days Remaining column, then add a new one with these parameters:

Column Name

Month Due

Formula

=MONTH([@[Due Date]])

Number Format

General

Each task returns a numeric month value, such as 6 for June or 7 for July, making it easier to filter and group tasks by month.

To isolate the year for reporting across longer timelines, simply replace MONTH in the formula above with YEAR:

Column Name

Year Due

Formula

=YEAR([@[Due Date]])

Number Format

General

The numeric year component is successfully calculated for every row in the tracking table in Excel.

To identify scheduling issues, such as tasks that begin on weekends, you need a different approach because weekdays are not stored as simple calendar parts like month or year. Instead, Excel assigns each weekday a numeric position based on a selected system.

Here’s what to do in a new column:

Column Name

Weekday Due

Formula

=WEEKDAY([@[Start Date]], 2)

Number Format

General

With the 2 argument, Excel treats Monday as day 1 and Sunday as day 7. Without this argument, Excel uses its default system where Sunday is treated as day 1 and Saturday as day 7.

Each task now returns a number from 1 to 7, where values 6 and 7 correspond to Saturday and Sunday, making weekend starts easy to identify.

The numeric weekday component is successfully calculated for every row in the tracking table in Excel.

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Microsoft 365 includes access to Office apps like Word, Excel, and PowerPoint on up to five devices, 1 TB of OneDrive storage, and more.


Calculate exact working durations without the weekend clutter

Using NETWORKDAYS to measure real work time

Calendar-based durations often overstate actual work time. A task running from Friday to Monday appears to take four days, even though only two are working days.

So, to calculate true working days between project milestones, add this column:

Column Name

Working Days

Formula

=NETWORKDAYS([@[Start Date]], [@[Due Date]])

Number Format

General

Excel returns the total number of working days between the start and due dates, counting both endpoints when they fall on working days.

To include holidays, create a separate range containing vacation dates (for example, starting in cell F2). Then, select the first Working Days formula cell, and extend the formula to:

=NETWORKDAYS([@[Start Date]], [@[Due Date]], $F$2:$F$5)

Using absolute references ($) ensures the holiday range does not shift when the formula is filled down the table.

When you press Enter, you’ll see that the calculation now excludes both weekends and holidays.

If your workweek is non-standard, use NETWORKDAYS.INTL to define custom weekend rules.

Map future deadlines and end-of-month cutoffs

Using WORKDAY and EOMONTH for automated scheduling

Beyond tracking existing timelines, Excel can generate future dates based on rules such as working durations and billing cycles.

To calculate a projected completion date based on working days, remove the Due Date column, then add these two columns.

Column 1:

Column Name

Expected Duration

Values

Manually enter the number of working days.

Number Format

General

Column 2:

Column Name

Projected Finish

Formula

=WORKDAY([@[Start Date]], [@[Expected Duration]])

Number Format

Date

Excel returns a date representing the expected completion based on the specified number of working days. It automatically skips weekends and returns the next valid working date.

To calculate billing cutoffs that always land on month-end, use this workflow:

Column Name

Billing Cutoff

Formula

=EOMONTH([@[Start Date]], 0)

Number Format

Date

Excel returns the last day of the month for each task, making billing cycles consistent.

Planning ahead with month-based review dates

Shifting dates across months with EDATE

Not all scheduling problems are about counting days. In real project work, you often work in monthly cycles—such as scheduled reviews, audits, or check-ins that repeat at predictable intervals.

For example, if a project phase starts on a given date, and you need to schedule a formal review three months later, Excel has a built-in function designed exactly for this. EDATE shifts a date by a specified number of months while preserving the day of the month when possible.

Here’s how to use it:

Column Name

Review Date

Formula

=EDATE([@[Start Date]], 3)

Number Format

Date

This moves the start date forward by three full months. For example, if the start date is June 1, 2026, Excel returns September 1, 2026.

You can also move backward in time when planning earlier review checkpoints, such as retrospective checks or pre-launch assessments. In those cases, you use a negative value:

=EDATE([@[Start Date]], -2)

Unlike day-based subtraction, EDATE respects calendar structure, making it more reliable than manually shifting dates.


Take control of your spreadsheet timelines

Ignoring Excel’s built-in date tools often leads to hours of manual updates and fragile spreadsheets. By understanding how Excel stores dates and using functions designed to work with them, you can build schedules that update themselves and forecast future milestones automatically. Once you’ve mastered tracking time with formulas, the next step is visualizing it—turn your data into a dynamic timeline that updates as your project evolves.



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