2020

Covid-19 struck the world without warning at the beginning of the 2020s, upending our most deeply rooted habits. Overnight, our screens became our only windows to the world. We witnessed an accelerated mutation of society: conference rooms gave way to video calls, classrooms to online learning platforms, cafés to virtual discussions. This brutal shift toward all-digital revealed both our technological dependence and our capacity for adaptation.

Digital infrastructures, once invisible to the general public, suddenly found themselves in the spotlight. The question of who controlled these vital resources became a political debate. Europe became acutely aware of its fragility in the face of American cloud giants: Amazon Web Services, Microsoft Azure, Google Cloud. The old continent responded by launching GAIA-X, an attempt to counter this hegemony. An ambitious project, perhaps belated, but symbolic of a will for strategic autonomy.

On the global chessboard, the Sino-American technological war took a dramatic turn. Washington wielded semiconductors as a weapon to slow China's ascent, banning the export of advanced chips to Beijing. In response, China redoubled its efforts to create its own production chain.

The public appearance of ChatGPT in late 2022 captured the collective imagination. Artificial intelligence and language models demonstrated they could write, code, invent, and converse. This wave sparked both fascination and concern. Parliaments worldwide took up the issue, with Europe leading the charge through its AI Act. The question was no longer whether AI would transform our professions, but how quickly and to what extent.

Cybersecurity moved from the status of a technical concern to that of an existential issue. Ransomware attacks targeted hospitals, administrations, and vital industries. Russia's invasion of Ukraine added a new dimension to the conflict: the war was also being fought in cyberspace, each ground offensive accompanied by its digital counterpart. This reality forced states and companies to strengthen their invisible defenses.

The cryptocurrency roller coaster captivated media attention. The spectacular collapse of FTX in 2022 served as a reminder of this young sector's volatility. Regulators, long hesitant, began to establish guardrails. Central banks, initially skeptical, worked on their own digital versions of currency. Beyond speculation, blockchain found its place in industrial traceability and document certification.

The digital environmental footprint came to light. The servers that power our connected lives consume the energy equivalent of entire countries. Cryptocurrency mining was singled out for its excessive environmental impact. In response to this awareness, tech companies multiplied their green promises: data centers powered by renewable energy, more durable hardware, less resource-intensive software.

Our homes filled with connected devices: voice assistants in constant listening mode, watches tracking our vital signs, cameras monitoring our comings and goings. This technological intrusion raised questions about our privacy. European GDPR became a global reference, inspiring similar legislation around the world, from Brazil to California.

The social media galaxy went through a turbulent period. Elon Musk's acquisition of Twitter transformed the platform into a controversial laboratory of unlimited free speech. TikTok conquered global youth, under the worried eye of Western governments concerned about the Chinese influence it carries. New networks, more intimate, emerged in reaction to the omniscient giants.

5G wove its global web, despite controversies surrounding Chinese equipment makers, Huawei foremost among them. This technology enabled unprecedented industrial applications including hyper-connected factories, autonomous and communicating vehicles, and remote surgery. Meanwhile, laboratories worked on 6G, promising dizzying speeds and infinitesimal latency.

Space, the new digital frontier, transformed into a playground for visionary billionaires. Low Earth orbit satellite constellations, like SpaceX's Starlink, began weaving a global internet network, bringing connectivity to the most isolated regions. This space democratization nonetheless ran up against astronomers' concerns, worried about seeing the night sky dotted with artificial points of light.

Virtual and augmented reality sought their path beyond the simple gadget. The concept of the "metaverse," resurrected by Mark Zuckerberg, crystallized both hope and skepticism. While the general public remained lukewarm, these technologies found their utility in professional training, industrial maintenance, and architectural design. Digital immersion progressed step by step, far from futuristic promises.

Quantum computing reached important milestones. Experimental processors achieved stability unthinkable just a few years earlier. While the universal quantum computer remains a distant horizon, specific applications emerged in molecular simulation and logistics optimization. This disruptive technology sparked strategic interest, each power fearing to fall behind in this twenty-first-century race.

Robots left factory cages to work alongside humans. These "cobots," more flexible and intelligent than their predecessors, adapted to complex and variable tasks. Post-pandemic labor shortages accelerated this trend. In warehouses, hospitals, and fields, these new machines changed the nature of work, raising as much hope as apprehension.

The State digitized at a forced march. Administrations offered smoother and more personalized online services. Cities equipped themselves with sensors to optimize traffic, lighting, and waste collection. Digital identity advanced, between administrative convenience and fears of authoritarianism. The path toward digital citizenship took shape, winding and fraught with obstacles.

Education retained lasting traces of the Covid period. Classrooms durably integrated educational software. Online courses gained pedagogical maturity. Artificial intelligence personalized learning paths. This accelerated digitization nonetheless widened inequalities, between connected and disconnected students, between innovative and neglected institutions.

Medicine embraced digital tools. Teleconsultation entered common practice. Diagnostic assistance algorithms proved themselves in detecting cancers and rare diseases. Connected medical devices enabled remote monitoring of chronic patients. This digital breakthrough confronted questions of confidentiality and care's humanity, while opening new therapeutic perspectives.

A collective awareness of digital ethical issues gradually developed. Algorithmic bias, organized disinformation, the attention economy, widespread surveillance: these subjects left specialized circles to enter public debate. Tech-ethics established itself as a discipline influencing digital service design.

The first part of this 2020s decade will remain the one where digital became both our greatest strength and our major vulnerability. Cascading crises revealed its central place in organizing our societies. More than a simple economic sector, computing asserted itself as the nervous system of our civilization, carrying our collective hopes as much as our anxieties. This awareness calls for renewed governance, where innovation rhymes with responsibility, where technical progress harmonizes with social justice and environmental sustainability.