Software vs. Fundamentals: Are Modern Engineers Losing Touch with Physics?

The engineering software era we live in is truly remarkable.

Advanced computational and simulation tools have revolutionized our industry—making designs faster, uncovering complex phenomena, and solving calculations in minutes that once took months.

Software is undoubtedly an asset. But are we unintentionally trading core engineering intuition for user interfaces?

Today, the line between an Engineer and a Software Operator is blurring:

• Inputs are plugged into predefined dialog boxes.

• The "Run Simulation" button is clicked.

• A polished, colorful report is generated and accepted without question.

Yet, ask the critical questions:

• Which fundamental physics equations ran in the background?

• What boundary assumptions did the algorithm make?

• Why did that specific value shift?

All too often, there is silence.

The Substation Grounding Reality: Touch & Step Potential

Think about a traditional earthing grid design for a substation:

• You enter raw soil resistivity, fault current, and clearing time into software, and with one click, it outputs a pass/fail report for touch and step potentials.

• But does the operator truly understand what governs those values?

• Do they grasp how surface layer resistivity (crushed rock layer thickness and wet/dry conditions), grid depth, conductor spacing, body weight assumptions (50 kg vs. 70 kg per IEEE 80), and current split factors directly alter those safety thresholds?

When site conditions require actual engineering adjustments, an engineer won't know how to properly optimize the grid if they don't grasp the basic physics underlying ground surface voltage profiles and human cardiac fibrillation limits. Software will compute the numbers instantaneously.

The Gap Between Screen and Soil

Simulation operates in a mathematically sanitized, theoretical environment. The field does not.

On site, soil strata shift across a few meters, ambient temperatures swing, contact resistance behaves erratically, and mechanical connections face real-world corrosion. When simulated outputs collide with harsh field conditions, software won't guide you—only practical experience and first principles thinking will.

Having an expensive software license is like possessing a sharp sword. Without swordsmanship skills, that weapon is useless—and can even be hazardous to you and others.

• The Generation of Mental Math: Before pocket calculators became ubiquitous, our elders managed complex accounts and inventory balancing entirely by memory and mental agility.
  

• The Slide Rule & Hand Calculations: Senior power system engineers designed robust transmission networks, calculated short-circuit fault levels, and routed power grids using hand calculations, vector algebra, and slide rules. Those decades-old substations and networks are still reliably operating today.
  

• Protection Relay Coordination: Setting a digital numerical relay without understanding the electromagnetic physics of an electromechanical induction disc is dangerous. If you don't intuitively know how a fault curve behaves, no software coordination screen will save your equipment from nuisance tripping.

The Real Danger to Electrical Safety

I am not against modern software. At its best, it is indispensable.

However, treating software as a "black box" where you feed numbers blindly without understanding the underlying mechanics poses a severe threat to electrical safety and reliability.

• Garbage in, Danger out: An unverified assumption entered into software generates a disastrous result disguised as an official calculation.

• The Formula for Engineering Excellence:

Solid Fundamentals + Field Reality + Computational Software = True Engineering

Software should validate an engineer's judgment, not replace it. Before you click "Run Simulation," verify that you understand the governing equations behind the screen.

What are your thoughts? Have you seen cases where blind reliance on software created real safety issues on site?

For my one closing line to all engineers.

"A simulation report is an engineering tool, not a substitute for engineering judgment. Master the fundamentals first; let the software be your assistant, not your brain."